While a lot of the thousand or so staff come with the venue, a decent number tend to be part of the tour. If your going to put one part of the tour on a sailboat to minimize emissions, it seems odd to say that only the famous employees count.

Also, the problem with her flying commercial is again, in a world where a wording number of famous musicians have been shot purely by nutcases out for fame, see the likes of John Lennon, it is very difficult for celebrities to fly commercial if people can guess their itinerary, and you do need to publish that for a tour.