Factual error: The tubing scene was filmed at Nashoba Valley in Westford, MA. The scene looking down from the top of the tubing run has a banner with the name of the ski area and the "mountains" in the background scene are photoshopped in.
Continuity mistake: After the hot cocoa is spilled, the stains on Will Ferrell's shirt keep changing from shot to shot.
Factual error: The movie is set over Christmas, but Forsythia (bushes with yellow flowers) only bloom in the spring.
Answer: Dusty married Karen. Adrianna is Karen's daughter and the step-daughter of Dusty.
Bishop73