Factual error: Neal says he stopped believing in Santa Claus when he was three because he didn't get an Oscar Mayer wienie whistle. You didn't have to buy wienie whistles; the Oscar Mayer company gave them away to children for free at grocery stores. (I had one.)
Suggested correction: For a child believing in Santa, it's not the price of the gift. His parents didn't get him a weenie whistle for whatever reason, even though he asked Santa for one.
Plot hole: Lots of police officers saw Santa flying at the end. This should've caused the world to accept Santa was real.
Suggested correction: From ONE location? Also, people wouldn't believe in Santa that easily.
Suggested correction: It should also be noted there were no cameras to capture the event, and not many eyewitnesses. Only a few neighbours and some officers. Even if these folks now believe in Santa, who's going to believe them? Folks they tell are going to think these folks are making it up, that their brain or someone else played a trick on them, or that they are mentally disturbed.