The show reunites three couples, Ellen Travolta and Jack Bannon, Roger Welch and Mark Cotter, Laura Sable and Bill Wiemuth. They’re all longtime friends and artistic collaborators. Travolta, Bannon, Cotter and Sable were all players with Coeur d’Alene Summer Theatre, where Welch was artistic director for two decades. Sable and Wiemuth (the accompanist) work as entertainers on the American Queen, a steamboat company that journeys along the Mississippi River, as do Cotter and Welch when Cotter isn’t doing his cabaret act in New York and Welch isn’t directing plays all over the country.