I'm not visiting a restaurant to get food the fastest way, I do it to relax, for the experience, to talk to whoever is with me. I just hate QR workflows for that. Do it for fast food joints, but not in proper dining places.
I happen to hate the server based workflow. When I visit a restaurant I do it to relax, for the experience, and to talk to whoever is with me. Not mess around talking to a random employee.
If it's done well it can be in addition to regular service. One thing I really like is when they make it easy to order another round of drinks or make it easy to pay without having to wait for the server to get me the check or bring a terminal over to me.
