A bit tangential, I know, but a few years back, a CM greeting my partner and me for dinner at Cinderella's Royal Table addressed us as "royalty", as in, "Welcome, royalty, we're very pleased you're joining us. Follow me, royalty, to your table." It struck me as utterly strange and unidiomatic, almost as weird as someone saying to me, "Hello, human being, it's good to see you." If they really wanted to create such a fantasy, they should have addressed us as "Your Majesties" or "Your Highnesses", which would have been odd in its own way but at least idiomatic.