Well my husband and I both agree that our pet peeve is cracky and complaining people. That want to suck you into their misery. Sometimes that's why we like to dine alone at night. Some passengers will complain about something that is not even the fault of the cruiseline. EX: We had to tender in Scotland and the weather was high winds and seas. We had long lines back to the ship and it stared to rain. Oh, the complaining! The Captain gave everyone $100 cruise credit and still people were not happy, we were over having to listen to them and would not agree and they would finally stop.