In the scene where Alice is watching Jonathan in a meeting at work, we hear the song 'The Wire' by the band Haim. The actor who plays Jonathan, Jorma Taccone, starred in the music video for that song.
D'Arcy Carden appears as the lady who catches Alice with her panties down. Kristen Bell and D'Arcy Carden appeared in The Good Place (2016) together.
Paul mentions Downton Abbey (2010). Julian Ovenden, who is also in the movie, played Charles Blake, a suitor of Lady Mary Crawley in the TV show.
During the photo montage of the kids becoming adults, the photo used for "Another Successful Charity Drive" is a real photo of
Cynthia Addai-Robinson with fellow Spartacus (2010) actresses Ellen Hollman (Saxa) and Katrina Law (Mira).