I can’t really provide much insight, but I was once contracted by a local Masonic lodge to install new windows. I had unsupervised access to pretty much any room that had a window in it, and I was even permitted to look around in the windowless chamber where they performed many of their rituals. They were actually pretty excited to show me around. I can’t imagine that they would allow a perfect stranger into their secret lair if they really had anything to hide. But, ya know, take what I say with a pinch of salt as it’s just one anecdote about one lodge in Nowhere, Ohio.