https://www.thrillist.com/travel/nation/weirdest-themed-cruises-cruise-deals
Unfortunately, as people get older, many get out of shape or become FAT. Thus, a costume cruise or a provocative clothing cruise would be so much better. However, there still could be a market for an old FAT people nude cruise. Even an anorexic nude cruise could sink one's hopes. Pavocative Costume Cruises or Cosplay Cruises are some of the best, because all kinds of styles, shapes and sizes can be there.
https://www.explore.com/1503821/cruises-most-bizarre-themes-ever/
https://thepointsguy.com/news/unusual-themed-cruises/
https://www.fodors.com/news/photos/what-the-deck-these-10-unique-themed-cruises-actually-set-sail
https://www.thesharonicles.com/2020/02/the-strangest-theme-cruises-of-2020.html
https://amateurtraveler.com/15-themed-cruises-interesting-exciting-just-plain-weird/
Perhaps some might even sign up for an impotent cruise. However, an enema cruise would likely be more popular than that.
https://travelwise.life/13-of-the-most-bizarre-cruise-themes
