It was a wonderful cruise, several ports of call intermingled with days at sea. My wife was taken by a pair of lovely diamond earrings aboard, and about half way through the cruise, one of the sales people talked us into buying them, as "they will not be available by the end of the cruise". What was rung up was a 1ct set of diamond earrings. Just for giggles, we took them ashore in the Caymans and went to Effy's to get a price comparison. The clerk looked at them, said "0.5ct", and quoted a much lower price; even wrote it down for us to take back to the ship. That evening when the stores reopened, we went back to the sales clerk, who ARGUED that Effy's must have given us a price of one earring because they wrote down 0.5ct, and our receipt scan said 1ct, and he had the paperwork ready for us stating that it was 1ct.
Once we got home we had them appraised for insurance, and sure enough they were 0.5ct total weight. We contacted the cruise line and their supposed guarantee arm, and were told that the scanned number was for a 1ct set, and yes we did only get a 0.5ct set, but the best they would do was replace our paperwork. If we had wanted them to be exchanged, it had to be done aboard ship before we got off!