I just got back from our trip and we did the Character dinner at Inventions. We met Mickey, Pluto, Dale (of Chip & Dale), Eeyore & Rabbit, and Geppetto.
Our reservation was for 6pm which was when they opened. This was a perfect time as there was no line to get food from the buffet, food was fresh, and the characters came to the table multiple times while we were there.
And the food here was the best we had in the entire park. I was rather disappointed with all our other meals.