I found a tiny snippet at HistoricImages.com that has the bottom of a newspaper article (maybe) with the date, Sun Jan 23 1972 which helped me find a photo of 3 bunnies in front of a BJ table with chips that don't look like others I know of, as far as I can see, but it's very blurry. It did say about the ship in the snippet and although the tiny part corresponds to the photo I found, it's not conclusive. I've tried finding the photos again but to no avail and I'm not comfortable with posting them on here.
The brilliant Playboy book (Tom Stroh, with updates from Richard and Mark) mentions a photo showing just 1 bunny in front of a BJ table (not 3) although the one I have has a watermark so maybe (like me) he could only describe it and not show it (I can only assume).
As it sailed Caribbean cruises from Florida (according to the snippet) I'd assume they were in $s as the book also says.
Hopefully that may help others in finding out more.