We went in early June last year and I would say that it wasn't my favorite trip but it wasn't as bad as I expected either. Here is where you practice all the rules you have heard of. Go to the parks as early as possible. The mornings are cooler and much less crowded. By 1 we were too hot and grumpy so everyday we went back to our motel to be cooled off most of the afternoon. About 5 we would head out again and stay out late because the parks are open later and after dark is nice. If they still have E-ticket nights at MK pay the fee and go, it is worth it!!!. When you are feeling hot, and it does get very hot during the day. Step into the shops for a few minutes to browse and cool off. It can be done and it would make a great present!!! (oh, don't forget to get a birthday badge if they still have them at MK)