slawecki
Not sure what you mean by very wealthy don't like labels etc, but have worked for and still work for billionaires, mostly very high profile, royalty and political. Gucci, Harrods, Louis Vuitton etc feature very highly on the list of shops frequented by almost all of those i've worked for.
Expectations during dining can be high, if not unreasonable, although generally their staff (i.e people like me) speak to the restaurants about this privately rather then themselves.

But, everyone is individual, and you can't say that ALL people are like this or that.