Plot hole: Near the end of the film it's revealed that Drew grew up poor with only his mother, who had to work double shifts to survive. So how did they afford that huge house? Even the Valcos are supposed to be struggling financially yet they now live in this massive house too.
Surviving Christmas (2004)
1 plot hole - chronological order
Directed by: Mike Mitchell
Starring: Ben Affleck, Catherine O'Hara, Christina Applegate, James Gandolfini
Visible crew/equipment: During the opening scene, when the camera shot is on a moving train, the camera and cameraman are reflected in the train windows. (00:00:35)
Tom Valco: I think your mom's starting to like your grandfather hitting on her.
Drew Latham: There's a sentence you don't often hear on Christmas Eve.