Character mistake: In the scene where Kris's knowledge is being tested, he incorrectly gives the vice president of President John Quincy Adams. Kris states John Quincy Adams' vice president was Daniel D. Thompkins. That's wrong. John Quincy Adams' vice president was John C. Calhoun. Daniel D. Thompkins was the vice president under President James Monroe.
Character mistake: The sign on the shopkeeper's door reads "Closed Thanksgiving Day November 28th 1947". Thanksgiving was on November 27th in 1947.
Answer: Not sure of the dialog but here is the Christmas Carol they sing, the lyrics are: Sinterklaas kapoentje, gooi wat in mijn schoentje, gooi wat in mijn laarsje, dank u Sinterklaasje. The translation is: Sinterklaas good man, throw something in my shoe, throw something in my boot, thank you Sinterklaas. Actually not a Christmas carol but a song for another holiday earlier in December.
JustMeintheUK