Factual error: Arnaz told the studio audience at the end of his show's recording that Communists took over Cuba (his native country) when he was a child. That is untrue as it was the Batista rebels that took over Cuba (early 1930s) when Arnaz was a child, not the Communists. The Communist take over of Cuba actually occured in 1959, many years after Arnaz fled the country.

Factual error: Lucille Ball is portrayed as a victim to everyone around her in the film. Actually, she was bold and brassy, demanding and demeaning in real life.

Factual error: In the final episode of "The Lucy-Desi Comedy Hour" where Lucy meets Ernie Kovacs, marked the final go around for the Ricardos and Mertzes. By this point, these shows were not filmed before live audiences as depicted in the film. The producers of the show had abandon live audiences long before the final installment.

Factual error: Contrary to what is depicted in the film, producer Jess Oppenheimer and Desi Arnaz never saw eye-to-eye. They never liked each other personally and professionally.

Factual error: While Arnaz is known as a womanizer during his marriage to Ball, Ball herself was known to have extra-matrial affairs in the last few years of their marriage. She is depicted as a faithful wife in the film which is untrue in real life.