I had extended family working for the State Dept.
Parties and entertainment.
Hard work....not so much.
You are correct. When they go to Foreign Service school, one of the first classes they take was called. “How to Work a Room, 101”.
We spends TONS of money moving these people all over the world every few years, pay for multiple homes, pay per diems that get pocketed, etc. And thry all serm to hate America.