A second Holiday Special of the series was ordered by Nickelodeon because the Latin American version of the channel, didn't have a Christmas special of the show to broadcast, since the first seasons of The Fairly OddParents had been sold to Disney in that region.
The end of the episode take place a year after the begining. This is the longest time of episode then any other episode of the series.
Unlike in Christmas Everyday! where Santa Claus and Mrs. Claus had original concepts and design for that episode, this episode brought them back to the classical portrayals of them that is known around the world.
Mrs. Claus looks nothing like she does in Christmas Every Day. Instead of being skinny, she is really fat like how most sources describe her. It could be possible that Jorgen gave both her and her husband a permanent source of magic which in turn gave them the form that they are usually shown in other well known Christmas sources. If so then this would remove the necessary thing for fairies to transfer some of their magic to Santa so that he can do his Christmas run. Unless it doesn't have enough magic for regular Christmas magic standards that is.
When Vicky pulls out her Wishmas card, the scenery is messed up to the point she could be seen abnormally larger than the Turner's house.
Tootie can be seen with her usual (Pre-Poof) "diva shape" glasses in this episode briefly.
How did Timmy was able to wish up a butterfly net and a remote control trap door to Cosmo and Wanda when a while ago we saw Jorgen switched off the Big Wand (fairy magic supplier)? It is possible that Jorgen turned it on again immediately off-screen.
How did Cosmo poofed to Santa's sled without any hindrances near the end of the episode when a while ago we saw Timmy trapped him and Wanda under a butterfly net? Cosmo probably lifted up the butterfly net by himself and used his magic as usual off-screen.
During the last verse of the song, Not on the List, Chester had different colored hair and skin tone.