In reading another post about upgrades at check-in, it made me wonder...When do you actually know if you are being upgraded. I know that when you sail on DCL, unless you pick your actual room number, then you are only guaranteed a room in the "category" that you book. However, a couple of weeks before your sail date, your room is actually assigned, and then you can see if you have been upgraded or not. I was just wondering if the resorts worked the same way. Do they mail you something with your room number? Our upcoming trip will only be our second, so please pardon me if what I'm asking is a little crazy or doesn't make sense. TIA!