How can I find out what the different codes for balcony staterooms mean? For example, I am looking at the Ruby Princess and have gotten a price from cruise compete for a balcony cabin, category BD, which is on deck 11. It looks like its towards the aft of the ship. I also received a quote for a category BB which is definitely an aft cabin. When I look on other decks, I see category BA, BC, BE & BD. Do the cabins generally get more expensive the higher up you go?