Lori B

In American ports, your phones will work fairly reliably.  However when in foreign ports or at sea, you'll be roaming.  And you could incur some VERY significant charges on your phones just from having them on if they're not in airplane mode.  Not to mention your service may be spotty at best which happens when roaming anyway.   So stay in airplane mode to stop from roaming.  If you have the ability to, ask your cell company to turn off international roaming if at all possible.  Some allow this, some dont.  With my xfinity phone I actually have to enable international roaming.    The big part isnt going to be the phone calls on your phone, the big part would be roaming data.  Apps like updating automatically, the phone likes updating automatically, even if the day before you departed you updated all of your apps just in case.  If you have voom, what I recommend is turning on the airplane mode, and then go wifi only.  If your phone allows for wifi calling it'll let you call out if you really must make phone calls, and your apps can update off of the voom.  
 
If you choose to do Voom, I consider it a good value because I like doing the instagram/twitter/facebooking while on vacation.  Its fairly quick with the stream and surf one.  (dont bother with the surf one, its painfully slow, even for emailing its pretty slow)  As for the devices, the voom 1 device, is one device at a time.  So if you have a laptop, a phone and a tablet, you go on the phone and check twitter, then disconnect from the voom, then get on the laptop and instagram your amazing pictures, then disconnect on the laptop and then get on the tablet and you're on facebook adding a "wish you were here" status.  That's all one device as long as only one is connected at a time.  So your question of you disconnecting and then letting hub connect would work perfectly.
I think 10 bucks a day for average to heavy soda drinkers is a good value.  Think about how much a soda costs at a restaurant.  Usually around 2 bucks.  And that's for each soda.  5 sodas a day and you've broke even.  So 2 sodas at lunch, 2 at dinner, and just 1 soda midday or in the evening, you've broken even to land standards, much less to ship standards if a soda is 4 bucks a soda.  3 sodas and you've broken even on soda.  So good value to me.   If you dont like the freesyle machines, you can always go to a bar and get a fountain soda.    The price for the soda package almost never goes down on the site.  I think people on these forums have seen the soda only package go down like.... once.  In several years.   Across multiple ships and sailings.  The soda package likely does go up onboard the ship, so its almost always a wise decision to prepurchase the soda package, if the only benefit you get is being able to charge the soda package to a different credit card, maybe pay off the soda package before your cruise so you dont have to worry about it.  

While I have never purchased the Key, I have no reason to believe that the Chops lunch would be different from any other Chops lunch.
We find lunch at Chops on embarkation day to be a respite in a tornado.  It is quiet, tasty and very very enjoyable.  It has become a sort of tradition with us.  MANY times we are the only people in the restaurant.  That will almost certainly change with the Key but in the past, it was a wonderful, quiet place to enjoy a good lunch with a madhouse going on around you.

No, 
No, unless you have an international plan on your cell you should place your phone in airplane mode.  VOOM is a WIFI service not cellular and airplane mode shuts off your cellular service so you don't receive roaming charges.  You can communicate with your parents using a messenger service like whatsapp if they have a device with the app installed.  Whatsapp allows you to text, call and video chat with others, I hope this helps.

Glad to hear that Lori. Welcome aboard! Feel free to ask away with any questions/concerns you may have. There is a wealth of knowledge here from many seasoned cruisers who are more than happy to help you out. And don't worry about getting "flamed" for a question you post, THAT does not happen on this message forum. 

Agreed that your tickets will tell you where to meet.  In addition to meeting places on the ship, I've experienced meeting on the pier with excursion staff holding signs with name and number of the excursion.  Whether on or off the ship, you check in with that person and once they have everyone they walk you to meet your transportation.  For large excursions, they may take smaller groups to meet the transportation while the person with the sign keeps checking in more people.  I don't know how long they will wait for someone that is late.

Staff at the Shore Excursions can also answer any concerns/questions you might have while onboard.

Also your meeting location should be somewhere on the ship like one of the clubs or theater so you won't have to disembark on your own and find your group on shore.  

You should receive your tickets onboard if you booked the excursions through RCL. The tickets will have meeting location information on it and what time to meet. 

We put our phones in airplane mode and used the WiFi calling feature to make calls home.  Make sure you have that.  I tried it on our WiFi at home before we left to make sure that it worked.  I have an iPhone if that makes any difference as I am not sure about the others.

If in doubt, try it at home tonight.  Put your phone in airplane mode, connect to home wifi.  Try making a call and sending text.  
The big US cell companies all support it except on pre-paid plans then it varies.  If in doubt call or drop by a store for your cell company and ask them.  

Following on Matt's instructions,
It has been my experience that once my phone is in airplane mode, and I have connected to the ship's wifi, then am able to do wifi calling/text/internet.  My carrier allows it, but all carriers may not.  Best to check with your carrier to see if you have wifi calling.

Here's what you want to to do to ensure you can use your Voom internet without coming home to a monster bill:
Put phone into airplane mode Enable WiFi (sometimes airplane mode turns off wifi too, but it's safe to turn just wifi back on while rest of phone remains in airplane mode) Sign onto Royal Caribbean's WiFi network

Some cellular carriers have an international plan where they charge you $10 a day to use your phone outside the US.   You use the minutes and data on your existing plan but it may not be offered everywhere.  Call your carrier and ask them what international plans they offer that cover the ports you will be visiting.

Also see if your phone allows WiFi calling. Some carriers/phones allow it.  It would be in your settings under carrier.  You can try it at home first to see if it works by putting your phone in airplane mode.