An interesting phenomenon - - once you encounter the "passenger from hell" - you know, the complainer, whiner, food hog, chair hog, etc - you will then see (and hear) her/him everywhere, everyday. My wish to you all is that you don't meet this person until your last day aboard.
Post Scriptum - - these people do NOT make a difference to my cruise or to my love of cruising. It's a fact of life - I know that my fellow shoppers in the grocery store probably hate me for my mutterings as I wander the aisles (my least favorite chore). I love seeing all of the different people that are encountered on a ship and sharing the experiences with them. We always request a dinner table for 8 or more.