Well put.
I had a really odd experience a number of years ago when we went to the best restaurant of its type in our city for dinner on a Friday evening. Welcomed, seated, and ordered. I was impressed that the waiter didn't write anything down, he just (supposedly) remembered what we ordered.
Time went on, and eventually he brought our drinks.
Time went on, and after about another 15 minutes he came by again and asked me what we had ordered. Told him, and he nodded and left.
Another 15 minutes and we went through the same thing again, "What did you order?".
Another 15 minutes and once again "What did you order?"
At that point we got up, and I tossed enough cash on the table to cover my beer and my wife's glass of wine.
Walking through the main section on our way out, the owner asked how everything was, and I told him why we were leaving. No comment, just, "Sorry about that."
When we got to the parking lot, our waiter came running out after me, and told me I hadn't left enough money, he needed another 85 cents for the bill.
Totally flabbergasted, I happened to have that much in change in my pocket, so I tossed it at him and we left, watching him gather up the coins.
Needless to say, we never returned to that restaurant.