In an interview with GQ John Travolta reportedly drank the sea water claiming it made him: "feel alive."
First posters credit writer John Luessenhop also as the director of the movie. Movie credits and final poster credit Jodi Scurfield as a director, who only has that title in his filmography.
John Travolta and Tom Sizemore both played John Gotti; Travolta in Gotti (2018) and Sizemore in Witness to the Mob (1999).