A Family Affair
Not only did Coppola keep his daughter in the franchise, but he also added other family members. He also had both of his parents, his sister, and two of his sons have a helping hand in the film.
Securing the Role
Carlo Rizzi was played by Gianni Russo. Russo was a real mob associate to Mafia boss Frank Costello. Russo wanted to be in the film, so he pulled some strings, and secured the role. Don't ask questions!