This cruise is a charity gambling cruise to benefit the Flanders Hospital. Merrill (
Gavin MacLeod) was the best man at Florence Flanders' (
Celeste Holm) wedding. Florence's never-do-well brother, Frank Bannon (
Richard Jaeckel), is addicted to gambling and owes ten thousand dollars to shady Al Dixon (
Antony Ponzini). So Frank hires Dixon to run the gambling tables, to Florence's dismay. Newlyweds Nancy and Stewart Sidon (
Leah Ayres and
Shea Farrell) are considering moving in with his parents for a few years and saving some money before buying their own home and starting a family. But gambling fever gets the best of Nancy and she loses all their wedding check money at the tables. High school teacher Michael Borden (
McLean Stevenson) owns an invaluable antique silver dollar, which he plans to sell to a collector in Acapulco, until his girlfriend Sally (
Jo Ann Pflug) accidentally drops it into one of the slot machines and accidentally brings out the greedy beast in him.
—Maisie Fleckum