Filmed in 2018, this is one of Ray Liotta's last films, before his death in 2022.
Charlie Day and Mary Elizabeth Ellis are married in real life, they also star together on It's Always Sunny in Philadelphia.
Of the main cast of It's Always Sunny in Philadelphia (2005) only Glenn Howerton appears. However multiple guest stars & recurring actors from the show appear in this film: Jason Sudeikis, Mary Elizabeth Ellis, Artemis Pebdani, Leonora Pitts, Jimmi Simpson, Lance Barber, Andrew Leeds, Julia Cho, Alanna Ubach, David Hornsby, Lisa Schwartz, Peter Mackenzie, Christine Horn & Christopher Macken.
The Mayor of Los Angeles is played by Benito Martinez. At the end of the TV series "The Shield", the character of David Aceveda (played also by Benito Martinez) is on the fast track to being mayor of Los Angeles.
Charlie Day's character is named Latte Pronto. In 'It's Always Sunny in Philadelphia', in Season 1 Episode 1 around 12:30, Charlie Day is seated at a restaurant and there is a sign with 'Pronto' written on it in the background.