The opening scene with the bride left at the altar was unnecessary and appeared to be way out of place; it gives you a false impression of what the movie's plot will be. Fortunately, the direction the movie takes is much better than what you'd expect from the awkward opening.
The back story of the young mother who recently passed away, on the other hand, would have been useful but that's the omitted story you only learn bits of from dialog. Her daughter Holly in the grief of her loss, shut down and became non-verbal. Custody of the child was given to the youngest of her three uncles as per her mother's will.
The highlight is the acting of the twin sisters who play Holly; very sweet and the character is very sympathetic. The struggles her guardian uncle is facing in learning "on the job" to raise her work well in the story. The constant arguing of the uncles was somewhat annoying, but those issues are resolved and the story ends up being stronger for it. Finally, there is a romance that develops involving the shop owner (the abandoned bride) and the couple interact well together.
The fact it's set at Christmas time is a superfluous throw-away. This story could have been set with any backdrop.
The interaction of the characters works well, and although the plot doesn't have much dramatic conflict, there are some scenes that are very heartwarming to see, mostly those that feature Holly.