Perhaps they will have tableaux scenes of the characters, kinda like flash mobs, where the characters will be able to walk to a spot, have a “moment”, and then walk away while not actually having any human contact. Kind of like the Kylo “moment”, but for each character (Jack and whomever sword fighting in Adventureland, royal couples dancing or whatever in Fantasyland, etc.). It would reduce the amount of actors and actresses portraying each character to one, allow for shorter work hours for the attendant roles, and avoid the “parade” mentality if done as a surprise.