We took our DD's in Feb. 2001 when they were 2 (almost 3) and 4 and are taking them again this February. What I found was that our daughter's enjoyed different things in different parks. My 4 year old loved ToN (Epcot) so much that we had to go back the next night so that her DS and Pop-pop could see it. MGM they did not like. Of course this could have been because we had done MK the day before and MGM does not have real "rides" as my DD's put it. My thought this February is to do MGM before we do MK so the kids don't have MK to compare it to as I really feel there are things they would like there such as Little Mermaid, Sesame Street 3D, Disney Playhouse, Beauty and the Beast show and Fantasmic. Looking over what I just wrote, IMHO I would probably just do MK for 2 days if you are only going to go to the parks for 2 days. I would try to make it a day when they have Spectromagic and Fireworks even if this means taking a break during the middle of the day. If you can, I would make an early breakfast reservation for Cinderella's Castle or the Winnie the Pooh breakfast. This allows the kids the chance to see some characters up close before the day begins. My 2 year old was afraid of the costumed characters until the end of the week so I was glad we sarted with Cindy's -- good interaction , good pictures, and decent food.