Sergeant Zoe is wearing her rank upside down for a US soldier.
There is an evening scene when Rebecca and Matthew walk on the sidewalk. You can see snow on the side because it's time close to the Christmas. However behind them you can see green deciduous trees which is impossible in the cold and snowy December.
The phony hot coco with the glued together marshmallows that don't move.
Aerial view shows just the town trees decorated with lights, but during street view, all the stores are decorated with Christmas decorations and no trees.