Since Peter Lawford spoke French fluently and June Allyson did not, Lawford had to teach Allyson how to teach him to speak French in "The French Lesson" scene.
In the film Il était une fois Hollywood (1974), Peter Lawford stated that he felt admittedly miscast in this picture because "as a singer or dancer, I was ill-equipped to compete with Astaire or Kelly, but we did what we were told to do" under the studio system.
Peter Lawford and June Allyson would be reunited 25 years later in the film Ils ne tuent que leurs maîtres (1972), which was also the last film shot on the old MGM backlot before the land was sold.
June Allyson was playing a college student at 30 years old.