When Sierra takes the snow globe gift bag from the stallholder, the bag jumps between shots from being in her right hand up at chest height, to being in her left hand down at hip height.
When Sierra first arrives in the hotel and is scared by the raccoon at her window, she falls backwards and pulls down the curtain. She then goes to bed, but the next morning the curtain is back in place.
When Sierra is scared by the raccoon at her window, she falls backward, pulling down the curtain and falling over with the chair behind her. When Jake rushes in, the chair is back in place.
Jake and Sara are standing under the mistletoe. But, it isn't mistletoe, It's holly.
Sierra gets second-hand clothes and boots left by guests over the years. She somehow manages to wear three different types of well fitting snow boots which all look brand new.
At the Christmas market while looking at sleighs, Abby calls out "Dad, Sierra" but Sierra's memory is not back yet.
There must be a deleted scene where "Sierra", with amnesia, decides that people could call her "Sarah", because that name seems right. The little girl, & once the lodge owner both call her Sarah, & it's never explained.