We were there for 6 days recently. we stopped at Dancing with Disney on 2 of those days. Both time it was the same group of characters. They were alternating sessions with "Ladies of Disney" (Clarabelle Cow, Clarice, 2 stepsisters, Daisy Duck, Lilo and Marie) and with "Disney Villains" (Prince John, Sherrif of Nottingham, Big Bad Wolf, Queen of Hearts, Cruella Deville, Smee, and Capt. Hook).
Both days we went it was the same procedure. Each "set" had the same music and basically the same jokes (by the DJ). They just alternate between the sets with villains and ladies. In between those sets it's music to dance and there are cast members dancing too.
They do not stop for autographs. I don't think they are supposed to stop for pics either. Clarabelle did pose with my daughter when she saw me snapping candid pics of them dancing since no one else was with them.