Andrew W. Walker, a frequent star of Hallmark movies, has a walk-on as the man entering Melody's Jazz & Cocktails, he listed in the closing credits as "Tall Guy". This appearance follows this year's tradition for Hallmark stars to appear in walk-ons in other Hallmark movies. This movie's star Tyler Hynes also has a "blink-and-you'll-miss-it" walk-on in the Walker starring vehicle Une famille surprise pour Noël (2021).
Written by frequent Hallmark leading man Paul Campbell for Tyler Hynes. It is a rare Hallmark venture to feature a man as its primary protagonist.
Star Tyler Hynes, screenwriter Paul Campbell and restaurant patron Andrew W. Walker (in a walk-on) play brothers in the Hallmark holiday films Trois Frères, Noël et un couffin (2022) and its sequel Three Wiser Men and a Boy (2024).
An Unexpected Christmas was produced by Unexpected Road Productions.