Travel insurance policies should always be purchased when you are taking a cruise, a tour or traveling on a trip that requires pre-payment of thousands of dollars. Policies are designed to protect consumers in the event of illness or to provide a refund in the case of company, tour operator or airline default. Policies cost about 5% of total cost of a trip, but it's worth it. Consumers should always purchase a policy independent of the cruise, tour or vacation planner. Never purchase the trip protection plan from the trip organizer. They are designed to protect only the company and not the consumer. Always pay deposits and final payments by a real credit card and never by debit card or check.