1 - MGM - I love all the thrill rides there, like RnRC and ToT
2 - MK- I just love MK, its so pretty, and the rides rock there too! Space Mt! I'm in love! (heh heh)
3 - Epcot- I love Mission Space and Test Track. I also love the countries.
4 - AK- Although, once Expedition Everest opens, then AK will probably be #1. Now, there isn't much to do at AK. Just Kilaminjaro Safari & Primeval Whirl, for me atleast.