The Carnival Cruise Line Cancellation Policy will vary depending on when the cancellation occurs. Travelers who cancel their vacation far in advance typically get a full refund less any non-refundable fees. Travelers could have to pay cancellation costs as the departure date draws nearer, and the refund amount drops. More severe penalties apply for cruises that are canceled within 60 days of departure; depending on the time period and length of the voyage, the fines can range from a percentage of the total cost to the full sum.A “Vacation Protection Plan” provided by Carnival provides coverage for unforeseen circumstances such as illness or cancellations.