Factual error: When the plane takes off headed for Las Vegas, the shot out the window below shows runways 35 and 41. Runway 41 is impossible because ALL runways at airports are only numbered 1-36.
Factual error: During the song "A Guy Like You," one of the gargoyles trips the trapdoor on Quasimodo's miniature hangman's scaffold. Trapdoors weren't used on scaffolds until the 18th century.