I blame them for vomiting, urinating & bleeding all over the cabin fixtures, as well as damaging toilet fixtures, IFE screens, side walls and panels and so on. On cabins with more seats, less seats, wider seats, narrower seats, more toilets, less toilets... Seen all of this in post-arrival inspections and not just once: dozens of times. Vegas is a magnet for that sort of behaviour. To the best of my experience, it happens only on Vegas flights or very, very, very turbulent ones.