Yes they did have fastpass for this attaction during Easter. There were three CMs at a table, and they would ask you how many are in your party. She wrote the number of people and the return time on a ticket. It was definitely worth it, and I hope it's they install permanent machines. DD 2.5 and DD 5 loved it.
Also adding more shows would help. I think the last show was at 5:45. The non fast pass lines were long.