Maybe, but don't count on it. Keep in mind that the reservations reps of any cruise line are distinct from the shipboard personnel and can't really tell you about procedures determined onboard. Now, did you book a guarantee or do you have an assigned cabin? If you booked a guarantee (that is, you do not have a cabin number but are guaranteed a minimum category), you may have a shot at an upgrade. But, as I mentioned earlier, that can be difficult with three to a cabin. Sorry to be the bearer of bad news, but I'd rather not see your cruise start off in a disappointing way.