Mel Gibson played Mark Wahlberg's father. Gibson is only fifteen years older than Wahlberg. Though Wahlberg is playing a character, at least, a year younger than him. Dusty was a 12-year-old when missing his line on "Do They Know It's Christmas?", a song released when Wahlberg was 13.
When Mark Wahlberg's character is throwing a snowball, the music from The Departed (2006) is playing. Wahlberg was nominated for an Oscar for Best Supporting Actor for his performance in The Departed (2006).
The kid in the bowling alley that is making fun of Dylan that says, "He everyone, check it out. This kid is about to bowl a perfect zero." He is the same kid in the scene at the beginning of the movie when Brad asks where are all his underwear.
Mel Gibson and Mark Wahlberg play father and son in this movie. In their real lives, Gibson and Wahlberg have in common the fact that both have been arrested and convicted for crimes related to racism or other bigotry. Gibson's 2006 arrest for DUI involved leveling antisemitic and sexist slurs against his arresting officers (he pleaded no contest to the DUI charge and was sentenced to rehab and three years of probation), while Wahlberg was arrested and served time for several different racially motivated anti-black and anti-Asian crimes during the mid- to late-1980s.