upgrade is very variable at this hotel. I was RA, and last year got upgraded from a prestige deluxe to a prestige deluxe "with view", and entirely made up category (its not a bookable room). I queried it via email, but they refused to upgrade further, and also did not upgrade on arrival. Mines was a 3rd party booking, but RA is honoured on 3rd party bookings, and I was at least paying money as opposed to a BRG booking.

Others have reported genuine 2 room upgrade, to be fair the prestige deluxe room was more than fine. You can check-in @ VIP room (which is to the right of the main checkin desk). We stay 3 nights here and 3 nights at the venitian, and were able to check-in to the venitian as we checked-out of the palazzo in the vip area, with them even handling our baggage transfer direct from room to room.