I went with friends and we took a few balcony cabins on the same side of the ship next to each other, the advantage of that is that we could open up the partitions on the balconies between each of the cabins and have one long balcony with lots of seating.
There are also some advantages in paying, not a lot more, to upgrade with Celebrity to Concierge Class. This allows you priority boarding on and off the ship, your own reception area (no standing in those queues), a longer breakfast menu that will be delivered to your cabin at a time of your choosing, and a few other perks as well.
The destinations we visited included Cozumel in Mexico, George Town in Grand Cayman, Falmouth in Jamaica and Labadee in Haiti. Cruising the Caribbean is gorgeous with blue green water that you can see to the bottom, mixed in with their unique culture and of course scenery that takes your breathe away.