We were also on this cruise, and our experience was almost exactly as Camgirl describes. We travelled down the day before, as we always do - too much stress to travel on the same day, especially at the moment.
We braved the cold and did go on a couple of shore excursions, and are really glad we did. Well organised, warm coach, and the visit to the Vermeer Centre in Delft and the Mauritshuis in The Hague were fabulous.
We had a great time as always on QM2, but did notice a few changes. There were lots of staff that we didn't recognise, even from our last trip in September/October. Service was very friendly as always, though, and we found the food to be as good as ever. We had probably the best sommelier we've ever had, and the worst room steward.
We did notice a few 'downgrades' - minor things, but noticeable. No charger plates on the tables in Britannia, paper napkins in Kings Court, ....small things, but noticeable.
The Internet was as bad as ever. As we're Diamond our allowance meant we could sign up for the Premium package for the whole cruise. Didn't notice any real difference over the standard package - both as bad as each other. Don't know how Cunard have the nerve to charge for it at all, tbh.
As Camgirl says, this was the first time ever for us that the QM2 has felt crowded. Presumably as it was too cold to be outside.
One of the highlights for us was on boarding day, when there was an operatic choir singing carols in the lobby. A lovely start to the cruise.