I think you might have gotten the idea of the idea the OP was making. Its not that you can't have a bad exprince on a cruise, everyone who has been a cruise has had 1 or 2. But there have been lots of complaints latly about Carnival, that center around issues such as the length of lines at the buffett, the way peole are dressed in the MDR, the length of time for dinner, the number of people around the pools, etc. And his point was that they are complainning cause they got on a ship with roughly 3000 other people, but were not being treated as the only ones on board. Which means that thier "bad times" were due to thier own expections and not of any fault of anyone else.
2004 Carnival Imagination Grand Cayman/O.R. Jamica
2006 Carnival Valor Eastern Caribbein
2008 Carnival Liberty Exotic W. Caribbein
2010 Carnival Spirit Mexican Rivera
2012 Carnival Freedom Exotic W. Caribbein