Before the buses leave for the three prologue performances, the call board reads Diana Theatre 8pm, Mercury Theatre 9pm, and Jupiter Theatre 10pm. They arrive at the Jupiter Theatre first and proceed in reverse order from what was written on the call board.
The newspaper claims that Honeymoon Hotel has "400 rooms, 400 baths," yet all guests of each floor disappear into a single bathroom on the floor.
When the bus leaves the studio for the first theater all the dancers are wearing the "By A Waterfall" costumes but that is the second performance in the movie.
Incorrectly regarded as goof: After Nan hung up on Vivian, she left the receiver off the telephone switch hook. If Vivian had called back, she would have gotten a busy signal. However, she quickly clicked the switch hook several times which brought the operator back on the line. The operator would be able to tell that Nan's line was not in use and that no one was talking on the line. Therefore, a logical deduction would be that the phone was out of order.
When Nan hangs up on Vivian, Vivian tries to get back the connection by clicking the receiver hook several times. After yelling out "hello", the operator informs her that the phone is out of order, but Vivian never asks the operator to make a call never mind informing the operator who to call back.
After the "By A Waterfall" prologue ends, the film cuts to the audience giving an animated and thunderous applause, but in the balcony there is no applause or reaction. In fact, there is no movement whatsoever. They are perfectly still which indicates that a photo or painting was used for the balcony audience and then merged with the live theatre audience. The same photo/painting was also used for the "Shanghai Lil" balcony audience.
When Mr. Apolinaris is conducting business with Kent's business partners, there is loud applause and cheering from the theatre audience, but the background actors sitting in the rows behind them as members of the audience are not applauding or cheering. Normally, when the dialog is being recorded, the background actors would be silent. In this case, however, they forgot or failed to have them mime the applause.
While the Busby Berkeley musical numbers make for outstanding movie scenes, they would never actually work as prologues. For example, the "By a waterfall" number has at least two major set changes involving huge pools that would be near-impossible to pull off in a live setting.
The prologues are booked in the Diana, Mercury, and Jupiter theaters, and Kent says that their success or failure is "in the lap of the Greek gods." Diana, Mercury, and Jupiter were names of Roman gods; the Greek names were Artemis, Hermes, and Zeus.