- California Doubling: Averted. The movie was shot in Italy, and they were going to film on the real balcony, but it was too narrow. The scene is shot in the courtyard, with a replica balcony. This was the first time filming had ever been done inside there.
- Casting Gag: Patricia is played by Ashley Lilley, Amanda Seyfried's real life best friend. As in the Patricia she mistakes for the ex-girlfriend.
- Fake Brit: Chris Egan playing Charlie is Australian.
- Real-Life Relative: Franco Nero and Vanessa Redgrave broke up, married other people, reunited and married in real life.
- Reality Subtext:
Trivia / Letters to Juliet