In the original Broadway play, all the principle characters were Jewish. (In the early and mid 20th century, Catskill Mountain resorts like the one depicted in the story were vacation hot spots for East Coast Jews.) Because of anti-Semitism in America at the time, all references to Jewish-American culture (including the last names of many of the characters) were either removed or altered. For instance, in the adaptation process, the play's lead characters, Teddy Stern and Chick Kessler, were among a half dozen or so characters who were given names that were more Christian-sounding -- Teddy Shaw and Chick Kirkland. As Leonard Maltin puts it in his yearly movie guide: "[T]he original's satiric depiction of Jewish New Yorkers is completely homogenized."
The Broadway production of "Having Wonderful Time" opened at the Lyceum Theater in New York City on 20 February 1937 and ran for 372 performances.
This film flopped at the box office, resulting in a loss to RKO of $267,000 ($4.7M in 2018) according to studio records.
On the subway, Teddy opens the gift from her co-workers, which is a book of essays by the German philosopher Arthur Schopenhauer (1788-1860).