Guy's Burger Bar is something that should be tried at least once. The burgers are loaded with calories but they are delicious.
The sushi they have each night is worth the wait. We found that on some nights there were long lines.
The outdoor movie is fun, especially if you have kids but they need a bigger popcorn machine to cut down on the wait. However the wait is only a couple of minutes No more than most local theaters.
The aft pool is a great place to get away from it all. Plus it's closer to the ice cream machine.
Spend the first part of the time when you board to walk the ship and see where and what everything is. This will give you an idea on what you would like to see more of.
Take care and have a great cruise.