Comment by SapporoChris
18 hours ago
Some of the restaurants have ticket vending machines outside the shop. This avoids the need for a cashier inside the restaurant. It also mostly avoids the process of staff taking your order. Purchase your meal ticket from machine outside, hand ticket to cook as you enter, and take your seat.
Most of the ticket vending machines do take cash, but if they wanted to eliminate tourists then that would be an easy change to make.
On my last trip to Tokyo, I went to one of the Ramen restaurants that had a vending machine to order food. The machine, unfortunately, did not give us any change. I felt bad trying to explain to one of the employees because we both couldn't really understand each other. He eventually understood and gave us the exact change we did expect. After that experience, I wouldn't blame them for wanting to make the change and limiting tourists.
Sure, of course. I've just never seen one that didn't take cash or credit card.