This usually entails separate lounges, and boarding the plane long before other passengers do.
They can afford it, and I suspect it costs quite a bit. They also travel a lot for business, and it really sounds like their trips are grueling, even though they have top-shelf lodgings and whatnot.
In any case, one aspect of my forced retirement, has been no more traveling. I used to travel overseas, all the time, and haven't, for quite a few years.
I thought that I'd miss the experience, but find that I don't miss it at all. I traveled all my life (since I was a child). It's nice to set down some roots.