It's really simple: if I can't read your menu, I'm not eating. Goodbye. IIRC there's a law here that mandates a menu visible from outside the premises, it isn't always followed to the letter, but but most places comply, and it's a great way to avoid unpleasant pricing surprises. Same with paying. You don't accept cash or credit cards? Goodbye. You only accept apple pay or some other nonsense payment system? Goodbye.…
(Feel free to put up a URL and a QR code for the menu online in addition to paper menus though.)