When Graham first arrives in Hollywood, she watches the filming of a scene involving a woman who she says is a terrible actress. The scene is a veiled reference to "In Old Chicago" which starred real-life actress Alice Faye.
The Robert Carter character, who makes short, humorous films, represents Robert Benchley, whose 1935 film, How to Sleep, won Best Short Subject in 1935. Fitzgerald met Sheilah Graham at a party at Robert Benchley's apartment near Fitzgerald's in the Garden of Allah apartment building. Benchley was an American humorist who began working on films in 1925, and made a number of short films for MGM and Paramount during the 1930s similar to the one in character Robert Carter's scene in Beloved Infidel. During the 1920s, he was a member of the Algonquin Round Table in New York, and an editor and columnist for The New Yorker, Vanity Fair, and New York World.
In the scene where Scott and Sheilah go to Mexico, Gregory Peck is wearing a checked jacket and short, horizontally-striped tie. This is a copy of a jacket and tie the real Fitzgerald is wearing in a 1937 photograph.