I can walk for long periods, but I think regardless I would feel it, I think most people do. I remember I was doing a shift as a security guard a couple of weeks ago. It was a 10 hour shift, most of it was standing and I felt it lol when I came home.
was told though that most people would feel it too, that is why no one likes taking those shifts.
I can do the kneeling, it would feel a little uncomfortable.
I am not a cripple though far from it LOL