Continuity mistake: The coat rack suddenly has a long-strapped tan purse/bag hanging alongside Juliet's coat. The purse soon disappears. (00:10:45 - 00:11:15)
Other mistake: The minimal motions Olive makes with her marker on her "List for Santa" do not come anywhere near what is required for her to write "bring Grandma here for Christmas." (00:19:34)
