We chose this cruise because we had sailed on Cunard twice (before Covid) for a total of 29 nights and the Main Dining Room (MDR) at dinner was almost always exceptional and the two times it was not, it was made right by ordering something else, so we had zero complaints.
We tried Azamara last year and the MDR dinners were awful, so we were gun shy of trying another different cruise line when the food experience on Cunard had been so good in the past. However I did book the Verandah restaurant for the last 5 nights of a 7 night cruise just in case.
So we tried the Queen Elizabeth MDR on the first two nights if the cruise and were pretty disappointed. We were also traveling with friends for whom this was their first cruise and they were disappointed in the quality of the dinner food as well. So we then switched to the Verandah restaurant (extra charge) for the remainder of the cruise. Surprisingly, we all agreed the breakfast and lunch in the MDR was okay (we noticed breakfast was not quite as good as before, but close). So the cuts in quality appear to be mostly for the dinner meal.
The cabin was on Deck 6, port side, middle of the ship, and a standard balcony. The room attendant was very good as they usually are, and he was nice to quickly learn a few minor preferences we had (ice bucket and wine glasses). The beds are harder than I remember, so next time we will bring a small air-pad to place on top of the mattress to sleep on.
Between Sitka, Juneau, and Ketchikan, I would choose Ketchikan as the best stop by far. Great access to a lot of stuff around/near the cruise terminal and a lot of variety. Sitka was as expected more or less, a nice small fishing village, and Juneau was in my opinion boring with the exception of being able to get to Mendenhall Glacier.