The movie takes place in the mid of December through Christmas in the fictional continental European country, but it was shot in Canada. And yet, it was shot in the autumn. They used a lot of artificial snow to mask it (artificial snow is completely different from the real one). In the many scenes you can see a mix of green and yellow leaves on deciduous trees, and green bushes which is obviously impossible that deciduous trees and bushes have green leaves in the mid of December neither in continental Europe and especially in Canada. Snowing was always digital even on the various stock footage.
All the characters distinctly speak of a place called "Valdonia," not Veronia as seen in the summary and promo materials.
Lindsay certainly would have googled the royal family and known what the prince looked like.