Character mistake: When Stan tells the airplane pilot to go and get S-T-U-F-F-E-D over the radio, he incorrectly identifies himself as 'Sugar Tango' instead of 'Sugar Bertie'.
Revealing mistake: When the drunk Olive is standing on the chair lifting her skirt up it's obvious that Michael Robbins the actor who plays Arthur is trying very hard not to laugh.
Revealing mistake: When Stan and Jack are kissing the clippies as they come out of the ladies, if you look through the slits in the door you can see the next clippie who comes out and kisses Blakey waiting behind the door for her cue.
Visible crew/equipment: At the end of Part One when the camera pans along the side of the bus, you can see the reflection of stage lighting, a television monitor and several other pieces of film equipment in its windows.
Visible crew/equipment: When Stan is lifting Linda up onto the bus' bonnet so she can see into the driver's cab, if you look through the windscreen you can see a crew member behind the bus.