if the kids like just plain old food.....like hamburgers and hotdogs and things like that........then Electric Umbrella, American Pavilion, tacos are in Mexico fast food service.
If the kids like a few things different then The Seasons in the Land.....where Soarin is......alot of choices for them..
As for sit down restaurants.......this is going to be a toughie....most of the foods are some authentic ones from different countries......Germany has hot dogs and they do sometimes have chicken fingers and mac and cheese......
here is our dining link......go and look over some of the restaurants and their offerings.....have fun planning...
of the above. My kids won't do Sunshine Seasons, but I can see where others might. Another option is the Fish place at the England pavilion. My kids like fish and chips and both are picky eaters. Biergarten is a good place for a TS meal. They have standard kid fare on the buffet.
Its mostly the same menus at all dining places in Disney. What do they like? If they are picky I would probably suggest perhaps Sunshine Seasons? If memory serves me, I've eaten at Liberty Inn before. Its pretty nice there. But seriously, same menu pretty much all around epcot. You can get almost all that stuff even at your disney resort.