- Big-Lipped Alligator Moment: The scene where Abby is being interrogated by mall security feels largely out of place in this holiday romcom. It's a little over-the-top, the guards act cartoon-ish (they're both played by comedic actors), and while Abby is still suspected of shoplifting afterwards, the scene in question is forgotten about completely. It's never even established if anyone actually did review security footage to see that Abby didn't take the store necklace. Overall, the scene could have been cut out, and it wouldn't have affected the film at all.
- Ensemble Dark Horse:
- Jane gets a lot of love, due to many viewers finding her to ultimately be the most sympathetic of her sisters, and finding her awkwardness endearing. Even to the point where many in the autistic community related to her and found her to one of them and that the story could have easily been about her and Harper.
- The hilarious John steals most of his scenes, and he manages to make fish murder and stalking endearing. On top of that, many find his heartfelt defense of Harper toward the end a standout moment in the film.
- Fan-Preferred Couple: After all the strife Harper put Abby through during the movie, quite a number of viewers expressed a desire to see Abby get together with Riley instead, including Riley’s actress Aubrey Plaza.
- Memetic Psychopath: Harper. Some viewers have decided to interpret the film as being a “horror movie in disguise” with Harper being a psychological terrorist.
- The Woobie: Jane, who is unwaveringly sweet but put down by her whole family, scene after scene.
YMMV / Happiest Season