My DS11 wasn't too into character meals on our last trip in Feb. The only one we did was Chef Mickey's breakfast. He had fun, but got kind of embarassed by the character interaction after a while because there were a lot of "little" kids who were waiting to see them at the next table. This may be because he's 5ft7 and doesn't look 11 (and he knows it..), he gets embarassed easily
I just asked him and his favorites are Boma (#1!), Ohana and Sci Fi in that order.