Hi Michael, is your cabin a catagory 9 and did you purchase maybe a catagory 8 Guarantee? If that is the case you have received an upgrade. Can't tell you about the elevators, but I would guess that it is soundproof from the back of the elevators. You stated that you believe you have been booked into this cabin, you don't know this for a fact as of yet? If you have any concerns contact your travel agent and get them to find out if you have been upgraded, and to get you the specifics on this particular cabin.
My cabin IS a catagory 9, and I DID book a catagory 8 guarantee! How'd you know! On the ticket they sent me, however, it shows me as booked into cabin 6277, which on the deck map looks like a palacial suite!
Because it's a guarantee, however, am I correct in assuming that I might not BE in that cabin come cruise time?