You probably would know a few if you heard them :)

I have heard that nostalgia tours and performances are still a big way for them to earn when they're past their prime.

I think so. A lot of the younger performers can't pull together a full concert well with their song list. The old performers have depth.

Congrats on getting an upgrade. I have yet to experience it in hotels nor flights.

We have been downgraded before! :D