I have sailed as many as 4 times in one year on NCL. I sail out of NYC as it is nearest my home. On a cruise in 2015, my daughter bought 2 Sail Ahead Certificates. We had to book within 4 years, according to them. We did, and our cruise is for 1-3-21. I am sure that they will not be sailing. I cancelled on the date that final payment was due, because if I had paid in full for the cruise, I couldn't get my money back; it would be kept as a future cruise credit. Yes, I checked and made sure that is the policy. I cancelled, thinking that the certificates already used toward this sailing w