For the record: Kathleen Cody, Jerry Lacy, Lara Parker, Marie Wallace and Kathryn Leigh Scott are the DARK SHADOWS alumni taking part in the cruise. It didn't take much research to learn this, but it's possible the writer of the piece was preoccupied with finding SFW photos for one of the other cruises mentioned in the piece: The Big Nude Boat 2015. There are also such gems as Quilting Seminars at Sea, Psychics Unleashed 3 and the Meow Meow Cruise. I couldn't bring myself to read what that last one was about.
See the list for yourself HERE.
(Thanks to Shadow Wolf for the tip!)