There is a brief cameo by Florence Henderson and Robert Reed, known as Mike and Carol Brady on the Brady Bunch. They are seen arguing about the kids as they walk down the companion way. He reminds her that the kids are grown during their exchange.
The travel agency that mails out the mysterious tickets is called McGuffin Travel Service. "McGuffin" is a term used in film studies for the goal the characters are striving for, sometimes without their realizing it until the end of the story.
There is a brief cameo by Elinor Donahue and Jane Wyatt. The two are sitting at the bar, and we hear Wyatt tell her daughter, "remember, father knows best dear," alluding to the television show "Father Knows Best," in which they played mother and daughter.
Actress and dancer Juliet Prowse is seen in a cameo in the dining room asking a group of diners if anyone would like to go dancing. One of the diners attempts to stand to join her and is stopped by his mother. The diner, his mother and brother are Tony Dow (Wally), Jerry Mathers (Beaver), and Barbara Billingsley (June Cleaver) from "Leave it to Beaver."