When Martin picks up Erika at the airport, the long shot of the pickup on the highway is clearly a silver Ram pickup. When they arrive in Garland, it's magically changed to a silver Ford pickup. Guess that's Garland for ya.
Alaska in December gets about 4 hours of daylight, yet Garland's daylight hours are the same as the lower 48 states.
In the kitchen Erika tells Andy she's not letting him eat cereal and looks around for what she can turn into dinner. Spying some tomato soup cans she says she hopes he has a can opener. Both cans glaringly have pull top tabs.
While discussing Erika's hobby of astronomy, the item inferred to be a telescope is actually a surveyors transit.
Every time Erika is on her cell you see a reflection of her and absolutely nothing else on the cell screen which is black. No special effects taken to make an active cell conversation look realistic.