In Honolulu my wife was parading nude around out balcony cabin which seemed a safe thing to do. I said, "honey, in cities with tall skyscrapers like this people often have telescopes in the living room. There could be 100 people looking at you right now."
She said "yeah, right!"
After we were picked up by friends and taken to their Honolulu highrise condo, we walked in and saw a big telscope looking out at the harbor.
They hadn't seen her, but could have.
On a Yangtze river cruise, I put on the kimonon-style robe ( slippers to head out to my massage. Well, they didn't plan very well because as i stepped down into the main atrium I slipped on the tiles because the slippers were soft cotton bottoms, and my robe went over my head.