Beth, just means that you are guaranteed a price in whatever category you are guaranteed. For example, on 007, my son and his wife have a G category Gty. They may get their cabin assigned at anytime up to boarding, and it may be on a higher deck than their gty. I have done this many times, and it has almost always worked out that I got on a higher deck. Sometimes I have inquired at reception if I could get a little further "down" as I don't like the upper decks for stability. I have always been happy with the result.