It probably will be crowded, it wil probably be a little warm at times, it probably wil rain some of the afternoons (not much but some)...but your at WDW and the Fort...Personally I don't think there is ever a "bad" time... We just had our DD, SIL and 2 GC there the first week in August for their first visit. The parks were busy, it was hot and it rained..BUT WE HAD A GREAT TIME....