In the same universe as another Netflix Christmas movie, Prinzessinnentausch (2018): When Ashley comes back to the Rhythm Room and looks at the memorabilia on the wall, there's an article that shows the "Belgravia royals".
In preparation for filming, Chad Michael Murray reportedly practiced country western, hip-hop and jazz dance six hours a day, up to four days a week. He also prepared with a combination of cardio, cryotherapy, vitamins, supplements and clean eating, saying "If God didn't make it, I didn't eat it."
The movie Ashley is watching at the 5 minute mark is another popular Netflix Christmas movie, A Christmas Prince (2017).
Primarily filmed at Disney's Golden Oak Ranch Backlot, which also served as the filming location for The Muppets Movie, Pirates of the Caribbean: At World's End, and HBO's Westworld.
Marla Sokoloff, who play's Ashley's sister Marie, was one of the writers of the film and noted that some of the predictability of the plot was intentional: "I like to include all of the elements that we all know and love, and the thing that works. There are so many things that work about Christmas movies and why people revisit them again and again and again. So, those elements, I like to really lean into those."