Garden Grille is our favorite Mickey meal! The food is good, the characters are good and we like sitting on the lower level where you can see the Living with the Land ride as you dine. It is a bit quieter than some of the other Mickey meals which tends to appeal to us after a long day in the parks!
As for LTT which someone else suggested.... Mickey doesn't appear there. The characters are Minnie, Goofy, Chip and Dale and Pluto.