As I said, if it isn't a "can't afford it thing," it is a convenience thing, and for those people's convenience, an ATM machine is located in the room behind the bar. Think about it this way, by not having to increase prices across the board, to cover the cost of the credit cards, everyone benefits from lower prices, and for those who use the ATM in the back room, the fees are probably no more than the savings on menu prices by not having to upcharge for cc fees....
SJ, I think it is less these days that people cannot afford to pay cash, but rather that they don't want to take a bunch of cash on vacation with them. ...
All of this cash/check only thing isn't so new. It has been around for years. Only in the last ten years, did McDonalds begin installing cc machines at all of their locations. Most fast food restaurants still rely on cash as their main focus of sales, and as a whole for an international franchise, I'm sure they cut out millions of dollars of "waste."