You take your picture with Cinderella downstairs. Then, the Fairy Godmother and the 2 mice come out and dance around. You have a second to take a picture with them and get an autograph, but I wouldn't say it's like the other character dinings.
When we went to dinner the mice and the fairy godmother did not autograph at all, they did pause at most tables but certainly not all. We got a photo with my DD with the mouse in pink and DS with the mouse in blue but no godmother photo close to.
Cinderella is great downstairs but don't expect long with her either.