First of all, the forecast said that it would be sunny the entire first week of Aug. when we went and it rained every single day except for one. And I'm not talking about a brief 30 minute daily shower either. It rained on and off for the majority of the day - we had a fabulous time - in fact when the sun did pop out and I felt the heat - I wished it would rain again! The only things that were closed were the pools and waterparks (if there was a likelihood of lightening). Most people run for cover during a rain shower but my son and I ran for the biggest attractions/ rides - in our ponchos of course! We usually went back to the hotel in the afternoon to rest, change into dry clothes etc. we did have to do laundry twice in 6 days...but all in all it was great! Also, we took one sports bottle of Kool-Aid into the parks each morning and refilled at the hotel in the afternoon. Since it wasn't hot, we weren't as thirsty as I'd planned for us to be! I'm sure you'll enjoy your vacation even with the rain!