Garden Grill gets my vote. I've eaten at both and this December when I ate at The Wave the food was pretty awful. It was bland, over-cooked and I had to send back my DD's kids pizza. Yes, they messed up a kids pizza. When they sent out the "new" one that one looked horrible as well. It was totally doughy and didn't seemed cooked all the way. I looked at our Server and said, "Would you want to eat that?" and she said, "No". I then told her that if she wouldn't want to eat it, why should my 4 year old? I thought that a Manager would come over since I did see her going around the restaurant, but she never did. I think she realized we weren't enjoying our meal. The pizza was comped, but how did they mess up kids pizza? --twice! So the Wave was a total disapointment.
The Garden Grill is a family fav and my DD loves the flank steak and cupcake at the end. Oh, and we've had some of the best character interaction there. Just call Chip or Dale a squirrel and watch the sparks fly!