There was a large article in the NY Times Sunday Travel Section a couple of months ago that told all about these cruises. And yes they are for real, they are also booked completely for this year.
Go to NY Times Travel, look up Hog Heaven
Somewhere else on this web site, there was something about the
H O H S.....Hogs on the High Seas, a cruise with over 1000 bikers already booked.
I recall something about guests having their hogs along for the '' ride ''.....