I have only seen this type of behavior once and I know that I should not have been surprised because it was spring break and the coeds were out in force. It does not however excuse the behavior.
I was not feeling too well, I think I spent a little too much time in the sun and had not been able to sleep until about 2:00 a.m., sometime around 3:00 I heard the parade of village idiots drunk as skunks singing at the top of their lungs outside of our door. I was livid. I jumped to my feet and flew out the door and told them to shut their big fat mouths and to beat it NOW! They turned tail and went the other direction, very quickly.
The funny thing is this was not Carnival, it was NCL. Just goes to show you that morons can be found on any cruise lines.