How can I redeem the future cruise vouchers I purchased while on board the ship? August 26, 2019 14:11 Updated Future cruise vouchers can be applied to your next cruise once your trip is booked and the deposit is paid in full. Related articles How does Norwegian's Cruisenext program work, and what are the benefits? What is Onboard Credit (OBC)? Are special rates available if I sailed the cruise line before?