On most any cruise ship, passengers get frustrated by “chair hogs,” or people who try to claim a pool deck lounge chair for an extended period of time by leaving their belongings on it and then disappearing. Cruise lines discourage this behavior but it persists, especially on Carnival and Royal Caribbean cruise ships.

Image via Shutterstock Almost 100 people fell ill while vacationing aboard a Royal Caribbean cruise ship. The cruise ship was traveling to the Caribbean from Florida. Nearly 100 people developed gastrointestinal symptoms,