For sabering-the-champagne-bottle, Lee Pace admitted that he practiced for the feat at home using Thranduil's sword from his time in The Hobbit (2012) film series.
As the film takes place almost exclusively in a dark mansion with the only source of light being cellphones, a headlamp, and glow tubes, the cast had to be instructed on how to light the scene and themselves from cinematographer Jasper Wolf. Wolf proclaimed if any of the cast missed their timing the scene was unusable as all you would see is dark silhouettes.
Amandla Stenberg messaged New York Times film critic Lena Wilson after Wilson called the film a "95-minute advertisement for cleavage" in her review, saying, "Ur review was great, maybe if you had gotten your eyes off my tits you could've watched the movie."
The name of the movie and the game played in the movie are based on a commonly played Improv Game called Body Body (or Murder In The Dark) where players run around in a dark room while the murderer "kills" players by tapping them, hoping to get away with killing the entire group.
Pete Davidson actually punched Lee Pace during the tequila slaps scene. However, Pace had given Davidson permission prior to filming.