Anecdotes

Tyler James Williams, who portrays Charlie Goldfinch in the film, also recorded a song for the film titled "Unaccompanied Minors" that was only used in a television spot and not the actual movie.

Teri Garr makes an uncredited appearance in the film as Aunt Judy. She appeared in the film as a personal favor to director Paul Feig, and accepted no payment for doing so.

The Guards in the hall: Kevin McDonald, Bruce McCulloch, and Mark McKinney all used to be on the Canadian sketch comedy show The Kids in the Hall (1988).

For the UK release, the film was renamed twice. The original trailer was titled Unaccompanied Minors; the second trailer and the film referred to it as Grounded, and the third trailer had the title as Grounded: Unaccompanied Minors.

Three members of The Office (2005) appear at different times.