Do non-tipping tourists Japanese "know" that tips are discretionary?
They better know about Lake George, NY, were a man was arrested after his group left without paying the tip.
Leave a good tip - or else
The New York Times - 09/11/04 (no registration required)
When stopping in for a meal at Soprano's Italian and American Grill in Lake George, N.Y., leave a good tip.
Or else.
A man from the New York City area was arrested Sunday after his party of nine failed to leave an 18 percent tip, the restaurant's mandatory gratuity for parties of six or more people, which had been added to his bill.....