Chef Mickeys: We've only done Chef Mickey's for breakfast, but it is one of the kids' favorites. Great character interaction, great characters (the biggies...Mickey, Minnie, Donald, Goofy, Pluto). Napkin waving and singing and dancing. Fun, but very loud, atmosphere. I'd pick this one.
Liberty Tree: we've only done this for lunch. No characters, but the family loves the Pilgrim's Feast.
Garden Grill: Much quieter, lower-key type character meal. Food is good (my husband's favorite) and the rotating restaurant with scenes from Living with the Land below is cool for the kids. Mickey, Pluto, Chip and Dale are there in their farmer outfits. There is extended character interaction, as the restaurant is not too large. The characters came around more than once, hung out, and danced with our girls. It was a good meal and fun, but not an "event" like Chef Mickeys. That said, we are going there again in two weeks!