Just got back from WDW with our 6yo and 4yo.
Five from each we consider must-dos , some may have height requirements which preclude most 4yos...
MK
Mickey's PhilHarmagic, Buzz Lightyear, Goofy's Barnstormer, Haunted Mansion, Peter Pan
Epcot
Soarin', Test Track, Turtle Talk With Crush, manatees at Living Seas,
Mission: SPACE Advanced Training Lab indoor playground area
DMGM
Muppet Vision 3-D, Honey I Shrunk... Playground, Tower of Terror, Playhouse Disney Live, Lights Motors Action
AK
It's Tough to be a Bug!, Kilimanjaro Safaris, Boneyard Playground, Maharajah Jungle Trek, Expedition Everest
Super secret must for all parks, in code
Use FDaisstnpeayss, always.
Non-park:
On a non-park day, ride the MK monorail loop and check out the monorail resorts....
Eat at Chef Mickey's either pre park or on an off day.
Most important must-do : plan ahead (and go at slower times of year, if possible), and you can do it all if you want to, without rushing
We just got back and did absolutely everything we wanted to in all 4 parks... and nearly everything (all except SpaceM, Bears, Prezs, Stitch, and Dumbo) in MK, because it was open 9am to midnight the day we went... and we even took a long break on Tom Sawyer's Island and a long (because it was crowded) lunch at Cosmic Ray's.
