I feel like this would vary by shop. There’s an automotive shop with a relatively small waiting room, because they are less than a block from a ~2 mile long road of shops. Very walkable, just ever so slightly uphill. You can usually walk and find a number of stores to window shop at before heading back.
There’s another automotive shop a bit aways from my house. It’s on a mostly solitary street, a few miles away from any shops, and is not an area you would want to be walking in. They have a fairly large waiting room.
But I think they all say you’re free to to do as you please because there’s not really anything for you to do for the next 2 to 48+ hours, depending on what you’re getting done.
No, only slate and graphite