Not sure I would do it....as Carol mentioned, heat and humidity are pretty high in August. Last month, we had trouble getting swimsuits to dry in an a/c hotel room at WDW, let alone a clothes line strung up at the campground! Getting everything there could also be a challenge. Since we car camp, most of our gear isn't the lightest weight stuff (other than our tent) - so flying with it would probably push us way over the airline's luggage weight limits.... I'd love to camp at WDW sometime though....
Have fun!
Beth