I'm new to this thread, and to the DIS forums (fora?), but I'd like to add a point. I worked on a ship for a year between high school and college, and was paid very little. (It wasn't a cruise ship, and it was QUITE some time ago, so I can't comment on the numbers being quoted in this thread.) We fetched up in a variety of African and South American ports, and I learned two things. First, what doesn't seem like much to us seems like quite a lot to people elsewhere, so don't judge by our standards.
The second thing I learned was from a friend, also on the ship. We were shopping in an open air market, and I bought an amazing wooden carving for $5. As we were leaving, I commented to him that I was never sure if I got the best price, or whether I had grossly overpaid. He turned to me and gave me one of the best pieces of advice I've ever received: "Rich, if you got something you really want, and you paid a price that you think was really good, then you got a bargain, whether or not it was the best price."
I've been lurking on a lot of threads, and we all seem fascinated by both the CMs and the Mouse That Soared, and with good reason - they are incredibly unusual. So, as to tipping, (and my DW and I are going on our first cruise next January), my feeling is: it doesn't matter a bit whether or not someone is making a lot of money by my standards, by their standards, or by U.S. minimum wage. Most CMs give such exceptional service (from the times I've been to DisneyWorld and
Disneyland) that I'm eager to thank them. The tips I expect to give will be well beyond the suggested minimum - where warranted. Good CMs give real joy - why not applaud? And I always remember: money is the sincerest form of applause, because you earned it with your own sweat and hard work.
It's a bargain.....
Richard