I read somewhere there are old money people in Europe faking that they are “working class” - not really to hide the fact that they are rich - to have people to hang out with in general.
If I ever got to the point of having fuck you money, I don't see myself stop hanging out with my friends. We all like movies and dinner and board games. That's all I need in order to hang out. My board game group as it is has a pretty broad spectrum of financial situations.