We like both the Concourse and Le Cellier. The atmostphere is very different. We generally go to Concourse for lunch - great burgers, steaks. It is open, modern, and kids love that the monorail goes past. Our trip last week there were a few birds flying around (no where near food).
Le Cellier we like for dinner, atmosphere is quieter and nice and cool! There are so many other choices for eating at Epcot, perhaps try a new restaurant?!?!
either way - have fun.