Special Guest Stars Lauren Graham as Joan Guest Stars Andrew Leeds as David Clarke Kapil Talwalkar as Tobin Batra Michael Thomas Grant as Leif Donnelly Alice Lee as Emily Patrick Ortiz as Eddie Bernadette Peters as Deb Renée Elise Goldsberry as Ava Price Co Starring Sage Linder as Drunk Karaoke Girl #2 Tom Pickett as Grandfather Craig Haas as Karaoke DJ Andrea Kelly Konno as Middle Aged Sister #1 James Hibbard as Priest #2 Mandy Moore as Herself Cale Walde as Random Businessman Veronica Bretton as Drunk Karaoke Girl #1 Nyima Hussein as Young Granddaughter Dorie Konno as Middle Aged Sister #2 Allison Law as Nun #1 Cara Lee as Nun #2 Morgan Tanner as Priest #1 Uncredited Paul Feig as Dale Copperwood