Back for the evening was Karen Lynn Gorney who played Stephanie, the girlfriend of Mr. Travolta’s character in the movie. The Trammps performed their hit song “Disco Inferno” and Carol Douglas, whose name appeared on the marquee of the club in the movie, also sang. Lenny’s Pizza, still on 86th Street in Bensonhurst, was served free all night.

Joseph Curcio and his sister, Elizabeth Curcio, appeared in many of the movie’s dance scenes.

“Him, he had a whole head of hair,” Ms. Curcio, 61, a retired hospitality worker, said when asked if people still recognized them. “It was all about dancing for us and getting a new outfit every week.”

The pair frequented the 2001 Odyssey when a casting director noticed their moves and invited them for a tryout.

“It was exactly like the movie — segregated. There was racial tension. They juiced up the sex in the cars, though,” Mr. Curcio, 58, a hair stylist, said of the movie. “It was the greatest experience of my life.”

The film, which follows Mr. Travolta’s character Tony Manero as he spends most weekends dancing at the disco while dreaming about a brighter future for himself, is a cult classic closely associated with Brooklyn.

In a Dec. 16, 1977 movie review, The New York Times critic Janet Maslin noted the movie’s dark moments such as the sexual assault of one of the characters and another character’s fatal fall from the Verrazano-Narrows Bridge, which links Brooklyn and Staten Island, but says Mr. Travolta was “so earnestly in tune with the character” that Manero becomes “a source of fierce, desperate excitement.”