There is a post-credits scene.
Among all the obvious references to the film's predecessor Daddy's Home (2015), one is more subtle: when the men wake up in the middle of the night to find that Adrianna (Didi Costine) has fiddled with the thermostat, everyone sports huge sweat stains except for Dusty (Mark Wahlberg), whose clothes are completely dry. This recalls the scene from the first film where Brad (Will Ferrell) notes that Dusty can do all kinds of extreme work-out routines without breaking out in sweat.
When the power goes out during the screening of "Missile Tow", the theater usher, who interrupts the film, has The Fighter (2010) on his name badge as his favorite film, another Mark Wahlberg movie.
When Mark Wahlberg's character is throwing a snowball, the music from The Departed - Il bene e il male (2006) is playing. Wahlberg was nominated for the Academy Award for Best Supporting Actor for his performance in the film.