Don't know if you have girls/boys or one of each??
For a character meal-1900 Park Fare, Crystal Palace or Chef Mickey's
Ohana's or Whispering Canyon Cafe have fun stuff for the kids
Kona Cafe or The Wave are pretty laid back and casual~
Personally-my kids would not go for Cali Grill...
Check out some menus and see what would interest your family
1900 Park Fare, Crystal Palace, and Chef Mickey's are some of our favs as well. We are dong Ohana's Stitch breakfast this time for the first time, so I can't comment on that one yet, but from what I have expererienced you can't go wrong as long as you eat on property.
I think with little ones you can't go wrong with Whispering Canyon Cafe, assuming you like BBQ. We thought the food was pretty good and the kids had so much fun. Plus I just love wandering around the Wilderness Lodge!