The people you run into sometimes that have their nose so high in the air you have to climb an extension ladder just to look them in the eye. "Oh, I would NEVAAR cruise on Carnivaal! Why, those people...I know you would never..." Oops, wrong! Of course that is not just on cruises.
And of course the lido deck chair savers. I have learned though, just to "help" them abide by the rules.
Gosh, I don't mean to sound so negative...I guess I just need a CRUISE!