I broke my leg and was unable to cruise 1.5 years ago (CAS had booked my 2 cruises). I called my CAS rep, explained that friends still wanted to go on the 2 cruises, and they recalculated what they would need to pay. One group downgraded from haven to a balcony, and they other went from 2 bedroom Haven to Haven spa room. The balcony people didn't have to pay anymore, but the spa Haven did have to pay a bit. I contributed my payment to their cruises, 'cuz I felt guilty (& jealous that I couldn't go! 😉)