We go at the end of August almost every year, and I love it at that time. We went Christmas week this year & THAT is what I call crowded. I can't believe we had to wait in line for El Rio Del Tiempo, we actually had to get fast passes for Maelstrom & when we went to MK, we waited till much later in the evening to go on POTC, because the line went half way through Adventure Land. Go in August & you can walk on all those rides. Of course you will need to get fast passes for the thrill rides, but at Christmas time, you were lucky to get a fast pass at all. I also like the fact that you can pack shorts, tank tops & bathings suits & you're all set for the week. In December you have to pack a little of everything, because the weather goes from 70's during the day to 40's at night. Yes in August you get a quick thunderstorm in the afternoon, but it cools everything off a bit. Otherwise, it's beautiful & sunny & when you get back from the parks it's still warm enough to enjoy the pool for a while.