monorailmedic

I usually do my photo work on a computer, but I've used the below app a few times and it seems to do the job without much fuss.  Straightforward to use, too.  To give you an idea, on my site, most images within an article are 400px wide (though sometimes larger depending on what they are), and in my galleries (where you can see larger versions), they're usually 650px to 1000px wide.
https://play.google.com/store/apps/details?id=com.simplemobilephotoresizer&hl=en&rdid=com.simplemobilephotoresizer

I usually do my photo work on a computer, but I've used the below app a few times and it seems to do the job without much fuss.  Straightforward to use, too.  To give you an idea, on my site, most images within an article are 400px wide (though sometimes larger depending on what they are), and in my galleries (where you can see larger versions), they're usually 650px to 1000px wide.
https://play.google.com/store/apps/details?id=com.simplemobilephotoresizer&hl=en&rdid=com.simplemobilephotoresizer

For those who might be interested in the Timbuk2 luggage that @monorailmedic recommended, they're having a one day sail today with 50% off and free shipping on most items. Use the code T2GIFT, which is mentioned on their page.

I personally am averse to bags with built in chargers for a few reasons.  For one, I'd rather have a charger that can go in any bag, my pocket, etc.  I own several different Anker chargers - great quality.  Another great reason - airlines aren't keen on large lithium batteries that can't be easily removed.  I always figured this would come up - and recently I saw this: https://www.washingtonpost.com/news/dr-gridlock/wp/2017/12/06/thinking-about-getting-one-of-those-smart-bags-for-your-holiday-travel-read-this-first/

Alright, this thread inspired me to write this out a bit more.  Shameless plug incoming...
http://www.cruisehabit.com/“smart-bags”-have-become-popular-–-we-find-some-impracticalities-and-now-airlines-are-banning-them

Alright, this thread inspired me to write this out a bit more.  Shameless plug incoming...
http://www.cruisehabit.com/“smart-bags”-have-become-popular-–-we-find-some-impracticalities-and-now-airlines-are-banning-them

Alright, this thread inspired me to write this out a bit more.  Shameless plug incoming...
http://www.cruisehabit.com/“smart-bags”-have-become-popular-–-we-find-some-impracticalities-and-now-airlines-are-banning-them

Almost all of our bags are from Timbuk2 and we've been using their stuff for years of flying, cruising, and more.  You can buy them direct, on Amazon, and from others.  
We have 2 of their carry-on-sized Co-Pilots and one extra large (must be checked).  We also have several of their messengers: small "daily carry" bags and  larger Command laptop messengers.  They also make travel wallets, pouches, and other things you'll find on me at any given point.
They think of all the little things.  Inside zippered sections are fastened to neoprene, so when you've packed too much in and are zipping up the compartment it doesn't feel like the fabric is going to tear or the zipper fail.  There are handled on all 4 edges of the Co-Pilots so that when you go to get a heavy bag from a trunk, the baggage carousel, etc you can easily grab it.  Most of their bags are made with waterproof materials, wheeled bags use ABEC bearings and skateboard wheels so they roll smooth, and the workmanship is fantastic while remaining light.  
Their products have a lifetime warranty, and thoughtfully, some parts are user replaceable (like the wheels and bearings, pads for straps, etc).  Find almost any pic of me on a trip and I've got Timbuk2 bags with me, and in most cases, one on me.

I know these tours are commonly booked by those with later flights so that guests enjoy their day and don't have to worry about their luggage (which is held by the cruise line during your tour - not sure where).
Perhaps someone here has done one of these excursions without going right to a flight, but if not I suspect RCI will be able to tell you if you can simply get your luggage at the end (rather than having them forward it on).  I'd be surprised if this wasn't an option.  That in mind, if you'll be renting a car, you may opt to do an airboat/everglades tour on your own.  You can look into Everglades Holiday Park and Billie Swamp Safaris (to name just two of the many options).  It just seems that going at it on your own would be cheaper, you wouldn't be waiting on others, etc.  On the other hand, you'd want to make an extra stop before heading out on an excursion to drop of your bags and such at your hotel - so there is that extra step.
With regard to clearing customs and immigration, guests with excursions on disembarkation day will be processed either ahead of others or separately, as the cruise line doesn't want to risk long delays if the lines get long in the port - so I wouldn't worry about that.

Unfortunately, I'm not sure anywhere here will be able to give you a conclusive answer, because there is a certain level of subjectivity to what they accept.  That is to say that someone may have been rejected under simliar circumstances, while others may have been given the go-ahead with documents that had more significant discrepancies.
That in mind, my gut is that you'll probably be alright, however my gut doesn't matter here.  What matters is a combination of the requirements (which are a tad fuzzy) and how they're enforced.  You can read here the exact verbiage we got from CBP as well as some of the ambiguities around using a birth certificate.
I'd do one of the two following things to shore up your chances.
Bring more supporting documentation. Have anything with your photo, or even just your DOB which also uses both of your middle names?  Bring it.  If it's a government issued ID, great, but even if it's not - just bring other documents that will, in the event they ask about this (they may not), tie the name on that birth ciertificate with the information on that drivers licence (or vice-versa). As others have mentioned, get a passport.  I know this isn't the one you want to hear, but it's the best possible thing to do.  You'll have no question at that point with regard to your documentation, and you'll prepared in the event that you were to miss the ship, have to leave the cruise early due to a medical emergency, etc.  Being in another country without a passport probably isn't a good time.  They're good for ten years, so divide that cost out across ten years and it's quite reasonable.   Let us know how it ends up working out.  Good luck!

Unfortunately, I'm not sure anywhere here will be able to give you a conclusive answer, because there is a certain level of subjectivity to what they accept.  That is to say that someone may have been rejected under simliar circumstances, while others may have been given the go-ahead with documents that had more significant discrepancies.
That in mind, my gut is that you'll probably be alright, however my gut doesn't matter here.  What matters is a combination of the requirements (which are a tad fuzzy) and how they're enforced.  You can read here the exact verbiage we got from CBP as well as some of the ambiguities around using a birth certificate.
I'd do one of the two following things to shore up your chances.
Bring more supporting documentation. Have anything with your photo, or even just your DOB which also uses both of your middle names?  Bring it.  If it's a government issued ID, great, but even if it's not - just bring other documents that will, in the event they ask about this (they may not), tie the name on that birth ciertificate with the information on that drivers licence (or vice-versa). As others have mentioned, get a passport.  I know this isn't the one you want to hear, but it's the best possible thing to do.  You'll have no question at that point with regard to your documentation, and you'll prepared in the event that you were to miss the ship, have to leave the cruise early due to a medical emergency, etc.  Being in another country without a passport probably isn't a good time.  They're good for ten years, so divide that cost out across ten years and it's quite reasonable.   Let us know how it ends up working out.  Good luck!

Unfortunately, I'm not sure anywhere here will be able to give you a conclusive answer, because there is a certain level of subjectivity to what they accept.  That is to say that someone may have been rejected under simliar circumstances, while others may have been given the go-ahead with documents that had more significant discrepancies.
That in mind, my gut is that you'll probably be alright, however my gut doesn't matter here.  What matters is a combination of the requirements (which are a tad fuzzy) and how they're enforced.  You can read here the exact verbiage we got from CBP as well as some of the ambiguities around using a birth certificate.
I'd do one of the two following things to shore up your chances.
Bring more supporting documentation. Have anything with your photo, or even just your DOB which also uses both of your middle names?  Bring it.  If it's a government issued ID, great, but even if it's not - just bring other documents that will, in the event they ask about this (they may not), tie the name on that birth ciertificate with the information on that drivers licence (or vice-versa). As others have mentioned, get a passport.  I know this isn't the one you want to hear, but it's the best possible thing to do.  You'll have no question at that point with regard to your documentation, and you'll prepared in the event that you were to miss the ship, have to leave the cruise early due to a medical emergency, etc.  Being in another country without a passport probably isn't a good time.  They're good for ten years, so divide that cost out across ten years and it's quite reasonable.   Let us know how it ends up working out.  Good luck!

We're on the sailing right after yours - don't break anything ;-)

It varies by sailing.  Sometimes a month, sometimes many months.
For anything in the cruise planner, we recommend booking as soon as you can.  Why?  If sales come up that reduces the cost of cruise-planner items (Voom, drink packages, etc) you can cancel and repurchase them at the lower price.  If however you wait and the prices go up, then you're stuck paying the higher cost.
Hope this helps!

As mentioned, Voom will give you internet access.  You don't want to connect to the ship's cellulata network for data or voice - it is "how is that even legal" expensive.  If you're only going to send and receive the ocassional text, the rates aren't terrible.  
If you have a newer device and a major US carrier, then WiFi calling may be an option for you.  This allows you to send and receive texts and make calls via WiFi without a network connection (so you can use your phone in airplane mode).  If you purchase Voom and have WiFi calling, it will be just like you're on land.
The below articles should help clarify things.  Let us know if you have any questions.
https://www.royalcaribbeanblog.com/2016/07/27/how-stay-touch-someone-your-royal-caribbean-cruise
http://www.CruiseHabit.com/WiFi
 

Correct.  Based on the latest announcements (which are super exciting and you can read about them here) it isn't clear if Wow Bands will be put on any additional ships - we'll see.

We're on the sailing right after yours - don't break anything ;-)

Thanks for all the comments, guys. I booked the Celebrity cruise and got an immediate cabin upgrade as my C&A points were carried over after I spoke to a gracious Celebrity CSR on another matter. Looking for ward to a new adventure! 

Welcome!
Compared to the US and Canada alcohol is quite a bit cheaper in MX.  There are endless stores which sell liquor right near the port in Cozumel and other destinations.  That in mind, those are still tourist prices.  If you head to a grocery store (if you are talking about Cozumel, there are 2 within a mile or so of where you'll dock) then it's even cheaper.  For example, a bottle that might run $35 in the US could be $25 by the port, but may only be $10 or $15 at the grocery store.  Also note that often you're looking at 1L bottles at the port instead of 750ml bottles at home.
As far as what you can bring back, assuming you're from the US, they say you can bring back a liter per person over 21.  What they don't explain is that you can bring back more - but you may be taxed.  I've brought back quite a bit more than this easily a dozen times though and haven't had an issue.  I think they're just trying to prevent reselling, so a couple brining back 4 bottles isn't a concern.  In the unlikely event they did want to take the time to do paperwork and collect the duties however, my guess is you'd still come out ahead - but I've not run into this.  Again, I can't promise your results will be like mine, but it's not been an issue after many trips - in fact they often don't even ask if you're brining liquor back.
Please let me know if I can offer any clarification.

I know they had it on a 5 night I sailed - so it's certainly not exclusive to 7 nighters.  Beyond that I'm not sure.

Welcome!
Compared to the US and Canada alcohol is quite a bit cheaper in MX.  There are endless stores which sell liquor right near the port in Cozumel and other destinations.  That in mind, those are still tourist prices.  If you head to a grocery store (if you are talking about Cozumel, there are 2 within a mile or so of where you'll dock) then it's even cheaper.  For example, a bottle that might run $35 in the US could be $25 by the port, but may only be $10 or $15 at the grocery store.  Also note that often you're looking at 1L bottles at the port instead of 750ml bottles at home.
As far as what you can bring back, assuming you're from the US, they say you can bring back a liter per person over 21.  What they don't explain is that you can bring back more - but you may be taxed.  I've brought back quite a bit more than this easily a dozen times though and haven't had an issue.  I think they're just trying to prevent reselling, so a couple brining back 4 bottles isn't a concern.  In the unlikely event they did want to take the time to do paperwork and collect the duties however, my guess is you'd still come out ahead - but I've not run into this.  Again, I can't promise your results will be like mine, but it's not been an issue after many trips - in fact they often don't even ask if you're brining liquor back.
Please let me know if I can offer any clarification.

For beverage gratuities, I don't believe so - they're automatically applied with each transaction.  Part of this is because there are folks who work behind the scenes (bar backs, staff who stock the snacks at bars, people cleaning the area, etc) who are tipped out of that pool.  It's just something to keep in mind if you're going to be tipping "manually" Not all of the people with tip-based compensation who are working hard to make your cruise enjoyable are on the front lines.

Well worth it.  The only specialty restaurant on RCI which we've not tried b/c of concern of the value prop for vegetarians is 150 Central Park.  Don't restrict yourself to what is on the menu - follow my recommendations in the below article and reach out ahead of time, then when you board, and at dinner and you can come up with all sorts of great things in each restaurant.  
One thing to be aware of is that w/ Chops & Giovanni's right next to each other, we've found that some of the vegetarian options in each come from a combination of both.  Some great sides from Chops, mushroom risotto from Giovanni's, etc.  That in mind, I'd prioritize one or the other (along with the other restaurants), and if you do end up at both just be sure they don't surprise you with a repeat.
Like I said, check the below article as I think it'll offer some nice tips for vegetarian dining in general, and reach out with any questions at all.
http://www.cruisehabit.com/how-request-vegan-vegatarian-gluten-free-or-kosher-meals-your-next-cruise

For beverage gratuities, I don't believe so - they're automatically applied with each transaction.  Part of this is because there are folks who work behind the scenes (bar backs, staff who stock the snacks at bars, people cleaning the area, etc) who are tipped out of that pool.  It's just something to keep in mind if you're going to be tipping "manually" Not all of the people with tip-based compensation who are working hard to make your cruise enjoyable are on the front lines.

It's more of a "build your own" kind of approach to Mexican.  More casual and endless options in terms of sauces, fillings, form-factors, etc.  I like Sabor, don't get me wrong - but I liked it a lot more when I could go and get just a snack or light meal.  Bleu Iguana is set up in a way you could easily make a meal out of it - or just go for a quick snack.  You can see more of it in the below article where I went over Vista dining:
http://www.cruisehabit.com/our-visit-carnival-vista-part-i-dining-carnival-vista