My guess is the profit/sqft. involved would not be high enough. But then again the profit for a water slide is an intangible.
All I ask is a tall ship and a star to steer her by; John Masefield
Carnival: Glory 2004, Destiny 2008, Splendor 2009, Freedom 2011, Valor 2012, Dream 2013
Celebrity: Summit 2011
Princess: Ruby 2010, 2014, Caribbean 2013, Coral 2014, Regal 2014
Star Clippers: Royal Clipper 2015
Hi Bob, the only one we have ever been on is the ship currently run by P&O Australia as Pacific Pearl, ex-Ocean Village, exex-P&O MV Arcadia, exexex-Star Princess, and originally, accoring to Wiki, Sitmar Fair Majesty - boy hasn't she been around.
The bar was never that busy though as it wasn't very side, so you had to either wait for a space, or simply climb out & attract the attention of the poolside waiters.
Will be interesting to see if there are more out there.
Alan & Katrina
Last Cruise: P&O Oriana October 2015
Next: Queen Victoria January 2016