Visible crew/equipment: Right at the beginning of the film, 'Baby' is having a group dance lesson with Penny. On the wide shot with Penny wearing a red dress and showing the dance steps you can visibly see a sound boom at the top of the screen. [Fixed in Collector's Edition.] (00:05:40)
Visible crew/equipment: After Johnny and Baby do their dance at the end of the movie they walk over and Baby's dad stops them. You can see their marks where they are supposed to stand. (01:34:35)
Answer: The father says they're leaving the next day, but when the mother asks why, he realizes he'd need to explain what happened, so he decides not to leave, and they stay for the rest of the trip as originally planned.