They got invited. Rich and famous people hanging out far away from the public, where they felt like they could relax and have a good time. Same reason anyone have to go on a weekend holiday.
I would rather think that Epstein was indeed an Israeli asset. But that the work he did was more about making connections. People drinking together, sharing hookers together. That is how business is done in many places
Definitely not a nothing burger but not what we are made to believe.