We just got off the Fantasy on Saturday, and we re-shopped a 2014 booking that I had made on opening day for Silver CC members (2/14). I had some questions about how this would work beforehand, so I thought I'd report back in case others have the same questions. I had booked the 6/26/14 Med cruise from Venice, and the price for our category (7A) went up about $250 about a week after we booked. As of the day before we set sail, the price had not increased again. While we were onboard, I wanted to rebook to get the OBB benefits and keep the same room. I also wanted to designate a TA (Costco). I had read conflicting reports here re: whether we would have to cancel our original reservation or if it would be possible to modify our original reservation. I took a copy of the e-mail confirmation of our reservation, and the woman I worked with at the Future Cruise Desk was able to modify that reservation. So we got 10% off the opening day price, AND we kept the same room, AND I was able to designate Costco as our TA -- even though it had been more than 30 days since I had made the original reservation. The only downside is that we did not get 10% of our original 20% deposit refunded. Personally, though, I was fine with that since it means our final balance isn't quite so painful! I hope that makes sense and that it answers questions for some of you!