I booked this trip as a surprise for my wife. Another couple joined us on the cruise.
We had been on the QM2 early in her service. We took back-to-back 12 day cruises from Fort Lauderdale to Rio and then back again. We had a wonderful time, but I was curious to see if the kinks had been worked out. The short answer is yes and no.
We were booked into the "Britannia Club". This is a sub-class below grill class but above standard Britannia class. The staterooms are on Deck 12 and they have nice open balconies, but are standard size.