1st time there: they watch you too much, like you're a potential shoplifter 👎. I visit museums around the country & world & have a website dedicated to art & museums. The best museums have a casual atmosphere even though they have good security.
There's nothing WORSE than having a person literally follow you from room to room. Use a Freakin Surveillance Camera and sit in a room with big screens to surveil the patrons.
Otherwise leave them/us alone to enjoy. If 99.9 % of patrons DON'T do anything wrong, seems wrong to watch them as if their potential shoplifters 99%of the time.
We ALL know the golden rule of museums: Don't Touch Anything Anywhere at Anytime