According to Burstyn's autobiography "Lessons in Becoming Myself", Burstyn and Julia Anne Robinson fell off the back of the golf cart in the Miss America scene when Bruce Dern took off too fast. Robinson hit her head and spent a few days in hospital as a result.
Filmed in the once popular Marlborough-Blenhim hotel, yet by 1972 the hotel had fallen on hard times like most of Atlantic City. The hotel continued operating until 1978 when it was bought by Park Place Entertainment. Despite protest the hotel was demolished in 1979 and replaced with Ballys Park Place Casino.
During the meeting with the Japanese businessmen, David Staebler (Nicholson) refers to an experiment where a woman cohabitated with a dolphin in isolation for a couple of months. This is perhaps a reference to the 1965 Dolphin Point Laboratory experiment run by Dr. John C Lilly on St. Thomas Island. The name of the woman who volunteered to participate in the experiment is Margaret Howe and she was 23 years-old at the time of the experiment.