Just returned from the Western Caribbean cruise and we had a great time. {Single Dad and three teenage boys -- second cruise, first with RC} --- Stayed in two rooms, one ocean balcony [ 7190] , across hall interior with fixed window view of Promenade [7187]. -- A few thoughts ........
Rooms --- my room was at point in ship where it started to widen, so view from balcony forward is better. Childrens room view was not worth it. Kept window shades pulled all time, had no interest in viewing "action" while dressing or sleeping. If you can budget it, go for the ocean balcony!
Size--- As many people have said,ship never feels crowded. Yes, on days at sea the pool areas are crowded ( and you got to love the people that reserve chairs and then never show!!!), but not anymore than to be expected. With multiple pools....adult areas...kiddie areas.... shady areas....not a problem to find a chair somewhere ( especially Adult only areas).
Nice room.... two twins or together a King. Typical tight quarters with a full sofa between beds and bath.