Plot hole: When the gang go out for the night, Don tells the girls that they have 30 minutes to get ready, but there is no way that Mimsy (the blonde one from the singing trio) did her hair the way she does in 30 minutes, plus got dressed.

Audio problem: When Cyril is driving up the bus up the mountainside, and Don is talking to him over his shoulder about Barbara, Cyril is heard to say "Don, Bachelor boy". However this is not what the original line was, as it can be seen that he is speaking different words. The line was probably changed between filiming and recording the over dubs.