This was the very first commercial I ever did. There were several versions of it all with different singers/bands of the day (this version features The Yardbirds). Unfortunately you can’t see them but other partygoers at this super clean teen-fest are George Harris III (who went on to become Hibiscus of the Cockettes) and Paul Jabara (Last Dance, No More Tears, It’s Raining Men etc)
There were about a dozen or so of these commercials w/ Buddy Hackett. Here’s four.