The song in Christmas Island is "Hurry Up Christmas" by Hunter Girl. It was also used during Hallmark's Christmas in July promotions for this season. Many people were searching for the artist, and here it is.
Lobster trap Christmas trees exist. They can be found along the New England coast during Christmas season.
While a mock Christmas tree is made out of stacking lobster traps in this movie, another 2023 Hallmark Christmas movie, A World Record Christmas (2023), also has a mock Christmas tree made out of stacked inanimate objects, namely library books.