When Joe and Patricia are walking to the top of the volcano, the tune of the natives' song sounds very much like the tune of Johnny comes marching home.The $300 that Joe makes a week would be almost $700 a week in 2022.Carol Kane appears in a cameo as the hair stylist who cuts Joe's hair but for whatever reason chose to use the alias Lisa LeBlanc to be credited.Tom Hanks and Meg Ryan would go on to star in 3 more movies together; Sleepless In Seattle (1993), You've Got Mail (1998), and, Ithica (2015).Early in the film a sign on the factory door says "Long Island City" (which is in Queens, New York). Late in the film Joe says that he lived on Staten Island. Commuting, by car, would between these two would locations would be difficult.