The title of the film advertised in Radio City Music Hall marquee is not visible, but there are enough clues to reveal it – Fred MacMurray, Tommy Steele, Disney production.
Norman Tokar’s The Happiest Millionaire (1967) in Roman Polanski’s Rosemary’s Baby (1968).
(In fact, that was a small goof, as Tokar’s film was released in the end of 1967 and the story is set in 1965).