A major reason why we loved this movie? It's not over the top in terms of cheesiness. If we had to compare how inappropriate it is in the language and violence departments, Home Alone is a good benchmark.
Parents should prepare for their kids to hear words like "hell," "moron," and "damn" several times. While there's certainly no full on F-bomb, prepare for a few "freakin's" from Teddy.
The same train of thought can be applied to the violence aspect. There are a few instances sprinkled throughout that could be scary to the 10-and-under crowd, like when Kate and Teddy get in a fight, a bartender chases Santa out of a restaurant with a baseball bat, and a group of Santa's elves push someone through a window. Of course, there's no blood or gore — just something to keep in mind.