I have two boys, ages 4 and 6, here is a list of everything they loved to do at WDW when they were 3:
Magic Kingdom:
Buzz Lightyear Space Ranger Spin
Tomorrowland Transit Authority
Carousel of Progress
Indy Speedway
Toon Town (lots of stuff there)
Tea cups
Pooh ride
Carousel
Dumbo
Peter Pan ride
Small World
Mickey's Philharmagic
Country Bear Jamboree
Pirates of the Carribean
Train ride around the park
Magic Carpets of Aladdin
Jungle Cruise
Tiki Room
What I would probably avoid unless he's pretty brave:
Stitch show
Timekeeper
Snow White
Haunted Mansion
What he probably won't be tall enough for:
Space Moutain
Splash Mountain
Thunder Moutain
(this is off the top of my head so I might be missing something)
Epcot:
Spaceship Earth (sort of dark, but my boys liked it)
Living Seas
Crush show (inside Living Seas)
The Land
Journey into Imagination
Ride inside Mexico
What he's probably not tall enough for:
Test Track (I think this is 40 inches)
Mission Space (he'll be too short for this one)
Soarin' (check height requirement on this one, if he's tall enough then I think he'd really like it)
What to avoid:
Universe of Energy (scary dinosaurs and loud sounds)
Maelstrom (dark, scary troll people)
Honey I Shrunk the Audience (big lion, snake, scary stuff)
MGM Studios:
Beauty and the Beast live on stage
Great movie ride
Playhouse disney live on stage
Voyage of the Little Mermaid
Who wants to be a millionaire
Light motors action stunt show
Backlot tour (but sort of boring for a kid that age)
Indiana jones stunt show
Toy Story meet and greet
Monsters Inc meet and greet
The Incredibles meet and greet
Stars in Motorcars Parade
What he's not tall enough for:
Tower of Terror (i think it's 40 inches, too scary for his age anyway)
Rockin' Roller Coaster
Star Tours
Animal Kingdom:
Dinoland - lots of games for kids
Triceratops Spin
Dig site
Safari
Rainforest Trail (sort of boring for a kid that age)
Festival of the Lion King
Pocahontas and friends
Things to avoid:
Kahli River Rapids (he might not be tall enough for this)
Dinosaur (scary and dark)
Primeavel Whirl (he's too short for this one)
It's Tough to Be a Bug (sort of scary, only take him if he can handle darkness and 3D effects)
Expedition Everest (he's too short)
I hope this helped. Sorry if I forgot any rides.
