We went in August last year, and while we had a great time I would have to think really hard about going during that time again. We are hoping that this June is better, since school is a big factor we don't have alot of options.
August was so so humid, last year was even hotter for us in IL than usually, so I don't know if it was abnormally hot for FL or not. It rained everyday, usually short downpours in the afternoon. The crowds, can it be any busier? I am glad that we had adr's who knows when we could have eaten. We had a blast to the most part, but just be prepared for the heat. We weren't! We had three sick kids by midweek, so make sure to push fluids.