The first trailer for the movie was released on November 9, 2012, via TV Guide, announcing the movie premiere for November 30th at 8/7c. However, on November 16, Nickelodeon changed the premiere for November 29th at 7/6c, and Nickelodeon's official website for the movie released a trailer announcing the new airdate. Nickelodeon aired the movie again on November 30th at 8/7c anyway.
In the scenes set inside Santa's workshop, Tootie is shown wearing a ring on her right hand. This implies that she and Timmy may have gotten engaged between the events of Grow Up, Timmy Turner! and this.
Cosmo, Wanda, and Poof's color scheme is darker than the previous movie.
It was revealed that the faries and the elves were rivals.
In "Christmas Everyday!", Santa's workshop was a large gray corporate looking building with a flashing "Kringle Inc." sign on the side. Nearby, the original version of Santa's workshop could be seen, dwarfed in comparison to the rest of the structure that expanded out from it. In this movie, Santa's workshop was totally different, similar to the way the place is usually portrayed in popular culture. It is possible that Santa and his elves upgraded the architecture and the elves clothing between "Merry Wishmas" and the movie.
There's a penguin living in North Pole. This is incorrect, as there are almost no wild penguins in the northern hemisphere, except the small group on the northernmost of the Galápagos. The same mistake had already been committed in "Fairy Idol".
Crocker says he dyes his hair, and that he is actually a redhead. But in "The Secret Origin of Denzel Crocker!" it's shown a 10-years-old Crocker with dark hair, and it is very unlikely that a 10 year old boy had dyed his hair.
How could Poof know about the feud with the elves, which was 2000 years ago? It is possible that Wanda and Cosmo told Poof about it.