I do think nearly everything looks lovely. And the fact that the QG Lounge has windows rather than walls is most encouraging. Natural light will make all the difference.
The only piece I’ve seen that I don’t like is, lo and behold, the Queens Grill. I feel I’m going to spend a fortnight staring at a wall. I’m sure it is a nice wall, but still…
On QM2 a sheltered balcony is an in-hull balcony. The view is not so good as one with a glass front, but it’s protection from the wind is excellent in mid Atlantic.
I won’t attempt to comment on other things, as I am in the wrong country, but I would say, why not use a competent travel agent?
Even though it is nothing to do with me, I am very relieved you are not attempting the arrival on the day. You will have an excellent time. If you are coming down on the Cross Country Service from Oxford, be aware that it is quite expensive and not particularly reliable. It is worth booking well in advance to get a cheaper ticket, if you can.