I think that Cunard lets you to take one bottle of wine per person per port soft drinks any amount spirits non.
Hi Mr/Mrs Park. As you can imagine, the drinks prices vary considerably by brand. However, as a rough guide most (a) Beers are $4 (approx. £2) (b) A "mid-range" bottle of wine can be $30-$35 (approx £15) or around $5 for a glass in the bars (c) G&T and other spirits will be around $6 (approx. £3) and the measures are very generous! (d) Cognac & Champagne. There are so many different options for this that it is difficult to give you a feel for the price but suffice to say that once calculated back into £s the drinks are certainly lower than UK prices and far lower in some cases.
In regard to the bottles in your room fridge, I don't think you can take your own. However, the Room Service prices for drinks are exactly the same as if you were sitting in the bar - also, they do special packages (e.g. a bottle of Gordon's Gin and 4 small bottles of tonic water) for you to put in your room fridge & the cost of this is ridiculously low (because it's duty free). So it is unlikely that bringing your own would save you money anyway.
Your Steward will give you the full "low-down" and help you in every way he can. The QM2 staff are exceptional and I am sure that you will find that they will be able to accommodate your needs without the need to break out a new bank loan.
I believe the ambient temperature on board is 68-70 degrees. I have been on the QM2 when the weather is hot outside and when it is cold outside. Both times I did not notice being uncomfortable while inside the ship.
I think you're going to have a wonderful time. Enjoy.
Thank you for that, we are so looking forward to the cruise, our first.