The shocked woman in the play's audience is the actual mother of the girl on stage playing Audrey.
Peter (Charlie Day) refuses to take off his shirt when he's at the gym with Noah. Day also stars in "It's Always Sunny in Philadelphia," in which his character also refuses to remove his shirt when asked.
Scott Eastwood (Noah) and Charlie Day (Peter) previously starred alongside each other in Pacific Rim: Uprising.
Jenny Slate and Gina Rodriguez are starring together each other in series Big Mouth.
Jenny Slate and Charlie Day previously starred together in Hotel Artemis (2019)