Essentially, you can only add prepaid, non-refundable expenses to a travel insurance plan. In other words, you can only insure the amount of prepaid costs that will not be refunded entirely in the event of a covered cancellation. Typically, these expenses comprise of airline tickets, cruise costs, and even hotels, tours, and prepaid excursions. Almost all plans insure expenditures like event tickets or theme park admissions too. Expenses like tuition or class fees and popular expenses for business trips are also insurable, but only with specific companies.