The old FCCs do not have that language about not using them on already booked cruises, just the new ones. So, Id say this is a period of changeover. Some have said they were rejected and some have still gone thru.
I was just saying that stating they can be used on already booked cruises, as if its a fact/rule might be misleading and Carnival could start enforcing this better at any time, so its best to be aware of the terms? I have the old 5 year ones and they do not have that in the terms, just the newer ones say that. I was not saying that people are not getting them thru on already booked cruises, just making people aware the new terms say not valid on already booked cruises.