This totally depends on the child, but here are our experiences.
We've taken DD- very calm child, at 2 1/2 and 4.
We've taken DS- very not calm and high- strung, at 2 1/2 also.
Now, totally opposite children. We've never had a problem and we've seen many shows. As an above poster said, the shows at WDW are much shorter than those at other places- most are around 15 minutes. My kids favorites have been:
MK- Philarmagic, Country Bears
MGM- Voyage of the Little Mermaid, Playhouse Disney, Beauty and the Beast, Muppets 3D (DD isn't crazy about 3D though but DS loved them all), Indy show, and Fantasmic
Epcot- Honey I shrunk the kids- again, DD doesn't love this b/c it's 3D but DS loved it
AK- Festival of the Lion King
I suggest trying a few. If you have to get up and leave- you wouldn't be the first or last to do so! But you never know until you try! Some of these are my children's favorite things at WDW! They are all entertaining and a great length for children to sit through and enjoy. The only 3D show DD really liked was Mickey's Philarmagic at MK. THe others have something that jumps out at you that is a little scary- a snake in HISTK and something in the muppets scared her a little- but she took her glasses off and got OK.
Good luck and have a great time! WDW is so magical when your children are little!
