I just booked 8/31-9/5 with a "Florida Resident Late Summer" offer. There was a non-Florida late summer discount as well. With my discount the tent site was $40/night except the last night which was $50/night (approaching Labor Day weekend). That put the average at $42/night. Total of $236.25 for 5 nights after taxes. Not too bad!
You have to be some what persistent. I checked this AM and there was nothing available..but tonight after playing with some dates then going back to my original search..boom $42/night popped up and I grabbed it.