Don't Touch Means Exactly That!, Newport
It is common knowledge that you should not touch anything in the Mansions. They should be respcted and treated as a museum. There are signs posted and guides remind visitors not to touch but I have witnessed it happen before.
On a tour of the Breakers the guide told us that many items go missing from tour to tour and they have found visitors touching and playing with historical pieces. I find this to be disrespectful and rude.