You will find that the fall is probably the least crowed unless there is a special going on. Mainly due to hurricane season but the prices are lower so its not like its empty. There probably isnt a really slow period. We always go at the beginning of summer when the rates drop and before hurricane season starts. It also falls on our birthdays and anniversary too. Whenever you go, you will realize that the resort is so spread out that you will never feel crowded, even on the beach. The only time youll feel like its full is at dinner sometimes but that is to be expected. Go when its right for you and dont worry about the other people. You wont notice them unless you wish to.
"One good thing about music, when it hits you, you feel no pain" - Bob Marley