According to Sir Roger Moore's commentary in the DVD during the dinner scene, the eyeball in the stuffed sheep's head that Louis Jourdan eats is made out of marzipan.
In his book, "As You Wish: Inconceivable Tales from the Making of The Princess Bride," Cary Elwes states that before he was an actor, he worked as a production assistant on this movie, with his job being to drive Sir Roger Moore to the set every morning. Elwes further goes on to say that he was "a nervous wreck" being constantly afraid of getting in a car accident and accidentally killing the Bond actor, so he drove very, very slowly. On one occasion, Mr. Moore noticed how scared Elwes was while driving and calmed him down by complimenting his driving, saying, "You can speed up a little if you want to."
It was not a planned part of the Indian cabbie chase sequence when a cyclist rode in between the two battling vehicles, but it -by chance - fortunately provided added suspense.
Released in the same year as the rival "Warner Brothers" James Bond production "Never Say Never Again (1983)," which showcased the return of Sir Sean Connery to the role. This movie earned $187 million worldwide. "Never Say Never Again" (1983) earned $160 million.
Stuntman Martin Grace had a serious accident while filming on the train. Hanging on the side of it, the train went into a non-assessed area of the track and he rammed into a pylon, seriously damaging his leg and hip and hospitalizing him for several months. He made a full recovery. In a similar vein, the actor who uses the buzz saw yo-yo broke his arm when he fell over the balcony onto Octopussy's bed. Despite his injury and having to wear a cast, he insisted on completing the rest of his scenes.