Face it, we aren't going to see Mick or Keith on a cruise ship. For the most part, I'd rather see the entertainers on their way up rather than on their way down.
I have to admit that my bias comes from my first RSSC cruise 11 years ago. My cabin was right next to the hall where the entertainers were staying, and so I got to know them over the course of the cruise, and was utterly charmed by them. Ever since then, I've enjoyed watching the young entertainers get their start on cruise ships. I've seen some wonderful talent as well as a few best forgotten. But I enjoy watching people who view where they are as an opportunity rather than a come-down.