TheRoll

I wear a polo/short sleeve button up and slacks/jeans to dinner. I don't mind wearing a tie on formal nights (I'll do it for our generational cruises) but my preference is to not wear one. 
 
I'm probably about average in terms of dress on board, but the main thing you should takeaway is that I wore what was comfortable for me. 

‘You’ll see many guys at dinner in nice jeans or dressy shorts and a untucked polo shirt on formal nights.  The same goes for specialty restaurants on those nights.  You’ll probably also see some snooty people stick up heir nose at that, but they’re not paying for your vacation.
On the regular nights, a nicer t-shirt and shorts are fine for teenagers ….. even a lot of younger men dress that way as well on regular nights.
 

During the holiday season, many people dress nicely on formal nights.  That is a relative term, but my teen age son always wore a shirt and tie with a sports coat.  He really loves to wear bow ties.  You can get away with less formal attire, and there are no repercussions, but adults tend to pay attention on formal nights.  (At least a majority do.)  When we lost our suitcases and wore casual clothes on a formal night, we explained our predicament and were served graciously by our wait staff. Ties aren't required, as others have stated.  Royal is very flexible, but they also publish guidelines for all restaurants.  The Main Dining Room often has a theme night, e.g., tropical shirts, especially on Caribbean cruises.  Attire has gotten a tad more relaxed in the last 15 years -- I no longer pack my tux--and most of us are so tired of COVID that we just want to cruise and not worry about anything at all.  Whatever you choose, have a great cruise.

Thanks so much - was thinking no ties for the teens/younger but wasn't sure!  Thankful to hear this as it would have been a fight for sure!  LOL!
 

My have my son (not yet a teen) wear nice jeans or khakis and a polo on casual nights. He wears the same pair every night and changes into shorts after dinner. Black pants dress shirt and tie for formal nights. We're dressier than some, not as dressy as others. 

Welcome! You'll get many answers. We wear resort casual. My hubby wears a tie to work most days and will not wear one on vacation. He wears polos most nights and a dress shirt on "dress your best" night. My teen boys wore the same, no ties for them on a cruise ever.  

How was the muster drill done.  Was it just through the phone app.  Was it quick?

https://store.optum.com/royal-caribbean/

How do you guys know what ships and how many are docking at cococay?
 

Have sailed both.  Both offer similar "included" food options while Royal tends to have more specialty dining options.  Royal tends to have bigger ships and with bigger ships come more space for more options.
I often sail without any extra cost dining but sometimes i feel like splurging a bit.  For your first on Royal I'd suggest sticking with the included options to see how you like them without assuming you must buy optional dining.  However if you want to splurge for a special occasion then go for it!
Check out the getting started section of this site:
https://www.royalcaribbeanblog.com/getting-started