Not full timing, but at a campground a few years ago, we'd woke up in the morning, all the window blinds were closed except one was opened about a foot high.
We were butt naked walking around the camper. The window was a slide window (on the side), little window.
A few minutes later we had a knock on the door with a very irate fellow camper. HE reminded us we needed to keep our window blinds pulled completely as he could see in.
So, after he left, I went outside, walked around the back of the trailer. My wife stood in the living room. We were on cell phones with each other. I asked her move around. I couldn't see her from any distance at all. Actually, couldn't see inside the trailer at all, it was dark inside and light outside.
So, I got closer. It wasn't until I actually got up to the window and covered made a shade with my hands, almost right up against the window that I could actually see inside the camper.
To this day, we still wonder what that guy was doing?