Despite the lack of holiday festooning on the cover, this has a lot of holiday details. The names of the characters are all vaguely holiday themed-- the town is Greetree, there's a Turtledove family, and even the dog is named Dasher. Nick's reality television show is a fun touch and involves him decorating Christmas cookies with his sister.
Middle grade readers have a fascination with celebrity and often envision themselves as famous singers or television actors, so Nick's wish for a more exciting life is one that will resonate. Of course, for most readers this is not a possible goal, so Nick does eventually figure out that wile his life in Greentree isn't perfect, he prefers it.