We really liked Garden Grill. We were able to snare last minute ADR's and were glad we did. The character interaction was very good. They spent time with the kids and as others have mentioned, because it's not a buffet, you don't feel the pressure that you are going to miss a character if you are at the buffet.
Plus, the kids really enjoyed that we were essentially inside a ride, Living with the Land, going around in a circle so we could see the ride. I thought it was kinda fun as well. (I remember eating here when it was the Kraft restaurant, which brought back good memories.)
The last thing I'll say is the the fast was great. I had concerns since the food was brought out family style, but it was very, very tasty. I thought the vegetables were very fresh, and our waitress told us that some of them come from the farm right below. I don't know if that is true, but I'll believe it since I was really impressed by how fresh all the food was.
I would absolutely recommend going.