Is there a way to tell which ship/date/itinerary allow two certificates? I used one last time from NY. Booked sorta last minute and for the inside cabin. I just lucked out on that I guess? Hoping there is a list somewhere. I was going to use one for Cuba but the person I talked to told me it has to be for cruises are 7 days or longer so I booked with another cruise line. Turns out you can use it for the Cuba after all. Anyway, I still have two that are valid to April 2020. By the way, does anyone know if this is a booked by or cruised by date? Thanks!