In our eight cruises over ten years on various lines in various price categories, we've never encountered any fellow guests who were unruly or whose behavior was inappropriate in any way. Instead, our fellow guests have always been friendly, lots of fun, and did nothing more unruly than perhaps laughing too loud after a few rum punches (which is not unruly at all). It does worry me when I read a growing number of posts about the food and furniture throwing, vandalism, and such. But we've seen none of it, and hope our luck holds out!