Factual error: Though the Elvis Christmas Special was shot in June 1968, Bobby Kennedy's assassination happened on June 6th and not while the recording had place -as the movie depicts - between June 27 and June 30.
Factual error: Norma Jean's mother is driving away from the house onto the street. She turns left and crosses a yellow dividing lane in the middle of the street. It is supposed to be 1933. But these yellow dividers did not come into existence until the 1950's.