Trivia: When Gregory Peck puts his hand into the Mouth of Truth and withdraws it (hand tucked into sleeve) the scream that Audrey gives is real. The prank was unscripted, but the reaction so perfect that it was left in.
Trivia: When Waldo and Loco (Betty Grable) are at the lodge, Loco says the music playing on the radio is Harry James. Waldo asks how she knows that, and she says she just knows that it's him. This is a movie in-joke because at that time, Grable was married to Harry James, the famous bandleader, in real life.
Trivia: At the end of the movie, there is a double wedding at sea with the ship's captain officiating. Most people assume that a ship's captain automatically has that authority. However, in order to officiate at a wedding at sea, the captain also must be a minister, a judge or justice of the peace, or a Notary Public.