When April and Eric leave the restaurant at the end, she leaves behind her $25,000 violin in the hands of a customer, and she does not have it when they arrive home. Very Yo-Yo Ma.
Eric drops the Christmas tree off his car into the snow which covers half the tree. When Eric and April bring the tree into Eric's house, there isn't a bit of snow on the tree.
For the first half of the film there is a row of candy canes on Aprils lawn. However, approximately seven minutes into the second half she is seen putting candy canes on the lawn.
April Stewart and Eric Redford live two houses away from each other in a well-to-do suburb in brick houses. For some reason, particular plot developments happen when one can hear what is going on inside the other residence.
April and her sister are performing at a restaurant where Eric and his date are dining. April comes around the table playing her violin. There are quite a variety of notes in the musical piece, yet although she moves the bow back and forth, April never ever moves the fingers in her left hand. They stay completely stationary, which would in real life sound like four notes only.
Eric is seen typing a draft of his new book, The Bachelors Dilemna. It's spelled incorrectly. It should be Dilemma.
In the beginning as April decorates her lawn, she breaks one of the large candy canes. You can see her trying to put it back together.
The two sisters, April and Elaine, are Christmas shopping and leave a store. As they walk down the street, "Jingle Bells" is being played in the background as though it is being broadcast over a loudspeaker for the shoppers.
Later in the film, April invites her neighbor's niece and nephew over to her house to give them decorations for their new tree. In her house there are dancing dolls under glass domes and the same version of "Jingle Bells" is playing.