Whatever floats your boat - the unstoppable growth of themed cruises
Show-stopping rock band KISS were always going to go the extra - nautical - mile.
Not content with filling stadiums around the world, and selling more than 100 million records, the face-painted, fire-breathing US hard rockers also have their own navy.
Every autumn Kiss hire a huge cruise liner to sail around the Caribbean for a week with 2,300 of their diehard fans. This year will be their sixth voyage, or Kiss Kruise VI.
The band perform three shows on the ship, and fans get to meet and hang out with the four band members.
There are 13 bars on board, plus 12 restaurants, a swimming pool, a gym, a spa, a casino, an indoor theatre and a tattoo parlour for getting a new Kiss ink work.
Members of the so-called Kiss Navy fly into Miami from around the world to attend, and Kiss vocalist and bass guitarist Gene Simmons says the cruise is one of the highlights of his annual calendar.
"It's rock and roll all night and party every day," he says. "Anyone who has ever been on one of our cruises comes back raving to their friends.
"Imagine 2,300 crazy friends, swimming, shopping, gaming and visiting exotic ports of call with us."
While Kiss might not be to everyone's taste, the rock group has helped to transform the once staid world of cruise lines.
Whereas cruises were traditionally the preserve of elderly holidaymakers, over the past decade - and especially in the past five years - there has been an exponential growth in the number of "themed cruises" - cruises aimed at people with a specific interest.
This has opened up the world of cruising to a much younger demographic, and given the cruise industry hundreds of millions of dollars in additional earnings.