When the lot is being closed for being a fire hazard, just as Bob walks up, "Shark Tank"'s Robert Herjavec can be seen walking behind him.
"Fir Crazy" is a pun on "Stir" Crazy, a phrase meaning feeling weathered-in or trapped, being kept from going out. The heroine in this film felt "trapped" in her family's Christmas, selling Christmas trees and living in a RV on a New York City street. "Fir" is the name of a type of evergreen (Christmas) tree.
When Elise and Darren go skating, she is wearing figure skates and he is wearing hockey skates.
This movies has more than a few similar plot points to the Mary Kay Andrew's best selling book Bright lights big Christmas.