I have only skimmed some of the replies, but that has given me plenty to comment on. I don't know what rate of pay the crew on my Saga or Cunard ships get, but I always found them to be happy, cheerful and willing to help. On Cunard we were in Britannia Club and the Restaurant staff there could not be faulted and it was not just out in for our benefit. Our waiter has been with the company over 10 years, is married with 3 kids and regularly sees his family during the cruise, they come out to see him. The staff in the Britannia restaurant were surly and not very helpful, however.
If you don't want to have tips automatically added to your bill, don't,cruise with that company, not all add the tips automatically.
We found that we rarely saw the same people, other than in the Restaurant, but then, only if they were dining at the same time. We had a table for 2 so did not,have to share and we could dine when we liked on Cunard. On Saga, it is all Freedom Dining, again we were on a table for 2. There are so many people around and so much to do and so many different places to go, you are not with the same people all the time.
We have enjoyed the cruises we have been on, including round Norway, with Hurtigruten. My best advice is to read the information very carefully and make sure you go with a,company you trust and who provides the level of service you want and is going to somewhere you want to go.