At all the parks, they have "little kids" maps that have all the attractions not to be missed by preschoolers. We were there last week and my 4 yr. old carried his with him every day. I would say to definately take Epcot and MGM in small doses. Take a stroller, even if you don't normally use one because it is a LOT of walking. If you can, get there when the park opens-it's much less crowded-most people arrive around 10-11:00. Our must-sees for little kids are as follows:
MK-all of Fanasyland, Toontown Fair,all parades and fireworks
AK-Camp Minnie-Mickey, Kilimanjaro Safaris, Festival of the Lion King, Mickey's Jammin Jungle parade
MGM-Playhouse Disney, Little Memaid, Beauty & the Beast, Stars & Motor Cars parade, Fantasmic (although some parts of this are a little scary)
Epcot-The Seas with Nemo & Friends, Turtle Talk w/ Crush, Journey into the Imag. w/ Figment, Illuminations
Hope you have fun!
