Japan is a vending machine powerhouse. Therefore, there are many casual restaurant that selling the food voucher.¬†We buy it with a vending machine instead of ordering to a clerk.¬†When we sit down and pass the ticket to the clerk, that dish will be carried. In short, it is prepayment.
However, an old-fashioned button-type ticket vending machine does not have English notation.¬†Foreigners may not know which button should be pressed.
Recent ticket vending machines that have become full touch panels may switch the display language to English, Chinese, and so on.