Plot hole: Near the end, when Ice asks to say goodbye to the kids in the hotel room, the kids have on their pajamas, yet their luggage was left on the train earlier in the day. It is unlikely that they would have gone to the train station to get their belongings following the chaos of the Christmas party.
Suggested correction: They have backpacks so their pyjamas were probably in their bags.
In a scene right after the train scene the kids tell the mom that Nick lost their luggage. The mom may have picked up some pyjamas for the kids after learning that they lost their luggage.
Continuity mistake: When Kevin gives the cookie to the deer, the deer eats the cookie, but in the next side shot, the deer eats the cookie again.
Suggested correction: Not a mistake as the next shot went to Lindsey, then back to the deer, in which Kevin seemed to be giving him another cookie.
The mistake is valid, the camera only cuts to Lindsey for a second and Nick is the one that had the bag of cookies. Not enough time for Nick to get another cookie out and hand it to Kevin so he could feed it to the deer. Plus, Kevin and Nick are in the same position.
