Cruise Fever's mission is simple, to help you have the best cruise possible. While we often write articles on things you should do on cruises, here are the worst mistakes that you can make on a cruise. 1. Climbing/horseplay on railings - Although this should be a no-brainer, we occasionally hear accounts of passengers sitting on the ship's railings or climbing over balcony partitions. 2. Stiffing the crew - While most cruise lines automatically charge a daily gratuity or service surcharge to your stateroom, you can have them removed by going to guest services. However, just because you are allowed to