Last year, around this time, it was about 75% full, but you still needed to get to the sexy pool by 8am to reserve a seat. (tip, drop your towel off before you work out) It sure seemed full. That being said, there are a lot more people on this site saying they are going that week. My friend just booked for the 5th through the 12th so there's still availabilty.
almost forgot....they were definitely full on Saturday. Because a lot of people start their vacations on Saturday and others end on Sunday - they were overbooked on Saturday and took the late arrivers on Saturday to a sister hotel and brought them back on Sunday. Get there early if you are going on a Saturday. If you are getting there late, I would call and ask them to hold your room.