There have been times that a pay toilet would have been a welcome sight......ANY toilet.
I was in Casablanca, wandering around and got hit with "_________'s Revenge". I looked around, not a toilet in sight. I knew I wasn't going to make it back to the hotel. I was outside a shop and thought I'd check in there. Through a door, I saw, wonder of all wonders: a Western toilet!
I gestured toward it and the shopkeeper nodded. Ahhhh. When I came out, I tried to give him some money for letting me use it. I'll never forget what he said: "Is no problem, Good Lady. When you have to go, is BIG problem!" I could have kissed him, but instead I bought some doo-dads in his shop. I was so grateful.
I used a lot of squatty-potties in Turkey, but I was young then and could squat and not have to worry about getting back up. The only time it was a problem was when I was in my last months of pregnancy and trying to use one on a pitching ferry in a storm. Not fun.