We ate there a few trips back, when DisneySister was still young enough to be REALLY into the whole character meals.
Unless the list of who appears has changed in the last 2-3 years, the characters that came around when we ate there were the "Classic" Disney set-Mickey, Minnie, Pluto, Chip, Dale-all dressed in Colonial American garb. There are no Princesses or characters from the movies, it's the infamous "Mickey and Pals" group, so it is a good place to try and catch Mickey without having to stand in line in the heat waiting to see him as you would have to do in the park.
I think you will enjoy your meal there!