Thanks for the replies! I don't have a coupon since this was promised in the phone call to tell us our cruise was going to only one port. I've e-mailed Carnival so I will have something in writing. It's been 10 days since they acknowleged my e-mail.
Mindy1, was there a limit as to the category you could chose? I'd dearly love a balcony suite but since we sailed 6D, I'm sure the 50% applies to that category or lower.