Host: JoAnn Castle. JoAnn Castle hosts this lively 1967 salute to vacation songs. She is seen in one of her all-time favorite numbers, dressed in an elaborate mermaid costume, with Larry Hooper in a diving suit, singing "Minnie The Mermaid". She sings, dances and plays the piano on 'Thoroughly Modern Millie" as well. Norma delights with "Summertime", the Lennon Sisters are "Sittin' On Top of the World", and the whole group closes the show by "Cruising Down The River''.