We went on a Monday morning so there weren't other customers. My kids enjoyed themselves for that hour. There was only 1 guy manning the whole shop. The rule is he has to accompany the child to guide him in maneuvering the machines (except for the big claw machine), sandpit and window cleaning. He said there were going to be 2 guys at the shop in the afternoon, from 2pm onwards. It was convenient to buy the tickets which are cheaper in Traveloka so it was great!