Mariah Carey was scheduled to film a cameo, however her scenes were never filmed. Will Farrell recalled that Carey showed up four hours late, then didn't want to do the scene she had agreed to do. Carey then delayed production as she didn't want to sing the song, one of her own, that she was supposed to sing. This would have required the legal department to clear the song. Carey also required her trailer to be filled with white flowers and stuffed animals of lambs. Carey's scene ultimately was not filmed.
Will Ferrell (Scott), Andy Buckley (Craig), Rob Huebel (Officer Chandler), and Randall Park (wall-street guy doing cocaine) have all appeared in The Office. Amy Poehler (Kate), Jason Mantzoukas (Frank), and Nick Kroll (Bob) have all appeared in Parks and Rec. Jason Mantzoukas has appeared in Brooklyn Nine-Nine. All three shows feature Michael Schur as a creator, writer or producer.
The trivia item below may give away important plot points.
When Officer Chandler and the councilman (Bob) go to the house with all the casino activity he just walks in without knocking and with no search warrant. Therefore no one could be arrested and no money could be confiscated due to what would be an illegal search and seizure.