I agree 100% with the comment about the McDonald's food ordering system. It is legitimately the worst of all the major fast-food chains. It is slow, ad-heavy, and there are certain things that you cannot order.
Meanwhile, an old man was hollering about how he wanted to pay with cash, but the kiosk wouldn't take cash, so another employee was trying to figure out how to transfer his order to the register at the counter to take his payment.
So in addition to being a horrible experience for customers, this whole thing appeared to be a disaster for the company in terms of both employee time and real money.