the first thing to appreciate is that QA is different from the Vistas. Once that is understand that you can start to see it positive and negative points
Britannia balcony fine except for inadequate storage space for a longer cruise especially one which embraces cold and warm areas such as the 3 weeks we have in December, Xmas Markets to Hamburg etc and then the Xmas cruise itself to the Canaries. The hooks fitted to the cabin are poorly positioned one being so close to bathroom that the use of a coat hanger invariably gets in the way of the door. The size of the hooks are such that a clothing tag of normal size cannot fit over them.
The bathroom is of course a great improvement.
Other points: no bookshop, essentials such as tooth paste soon sold out from a very small stock in the first place.
We did 2 tours; 1 Cunard, 1 independent both leaving 1130 returning 1630 approx. All food outlets closed at 1600 including pavilion Grill. On QV and QE daily programmes indicate Lido Grill open to 1700 or later.
The most annoying features are decks 10 and 11 with the Grills terrace preventing an easy passage through the length of the deck. We did eventually work out how to get to deck 11 and find easy access to both port and starboard sides of the ship.
Staff were of course upto Cunard, standard of food satisfactory, the AFH fine once you worked out the layout. You no longer have to hope the toast machine was set correctly as toast is supplied to order by the staff.
Having said all this we can live with QA and adapt as necessary but we will be glad to get back on QM2 next year.