When Fritzi reintroduces herself to Jill at the start of the movie and Jill fails to remember her, Fritzi reminds Jill that the previous summer, they had been in the play "'night, Mother" together. The joke is that "'night, Mother" only has two actors in it, and is an extremely intense, wrenching, emotional experience (it is about an adult daughter preparing her elderly mother for the fact that the daughter is going to commit suicide), so there is no way that Jill could have forgotten having already met Fritzi without Jill being incredibly self-absorbed.
Film debut of Anna Kendrick.
Many of the musicians for the film were in the band for the Broadway musical "Rent."
In her December 2016 New York Times essay about the making of Camp, Anna Kendrick said that at 16, she was anxious to downplay the implication that her character, Fritzi, was sexually attracted to her roommate (and eventual nemesis), Jill. "Today, I would be thrilled to play such a twisted little character. At the time, I just wanted to wear makeup and have my hair done, like the other girls in the cast....I still had to go back to high school once this was over, and I so badly wanted to be the hot girl in a movie, not the girl who washes the hot girl's underwear by hand."
Todd Graff was the 11-year-old Robert Downey Jr.'s camp counselor when he was at the summer camp that inspired the film.