The film marked the pioneering use of a video assist system, providing Lewis a way to see the action even though he was in the scene. Milton Berle was in town performing at another hotel while Lewis was shooting the picture and agreed to make an appearance as himself and in a dual role as another bellboy. Professional golfer Cary Middlecoff, the "Golf Doctor," appears as himself at a golf tournament. Lewis also appears as a fictional version of himself, credited in the opening credits as "Joe Levitch," his birth name).