I've read/heard this a few times in the last year and don't get it? Why don't people think that Epcot is for kids?
My 8 year old's fav rides at WDW include Mission Space and Test Track. Would your 9 year old not like them?
My kids love Epcot!
Things to do -
Phineas and Ferb (Agent P) game
play area at the end of Mission space (for young kids)
video games at end of Mission Space
see the marine life in The Living Seas
play area by Nemo (younger kids)
Nemo ride
Meet Crush
Figment - my kids LOVED this ride when they were younger!!
Innoventions - when they were young my kids spent hours in here pressing buttons, playing video games, etc
tons of characters to meet
Test Track
Mission Space
maze in England
all the kidcots stations for the younger kids
Donald Duck ride in Mexico
Circle of Life movie
plus all the entertainment around world showcase including jugglers
We always go for 2 days and don't have enough time there. My kids are 6 and 10 and have been to WDW 5 times.