During a break from rehearsals in Toronto, Luke Mably (Eddie) and Ben Miller (Eddie's valet, Soren) went out while in character to the Four Seasons and convinced everyone that Mably was the Prince of Denmark. They were demanding tea and cake and had six waiters around them, bowing.
During the release of this movie, the real heir to the Danish throne, Frederik X, married his Australian fiancee, Mary Donaldson, a commoner, later known as Dronning Mary.
The driver that Eddie races with at the start of the film is Eddie Irvine, a professional race car driver in real life.
The couple Paige and Prince Edvard, seem a bit like the real heir to the Danish throne Frederik X and his wife Dronning Mary. Both Paige and Kronprinsesse Mary love to help others. And both couples go against traditions. Just like Paige, the real Kronprinsesse Mary didn't know Kronprins Frederik was of royal blood when she met him for the first time.
The film includes footage from To Catch a Thief (1955), featuring Grace Kelly. Like the Julia Stiles character in this film, Kelly was also an American who became a European princess, when she married the prince of Monaco.