There might be issues with allergies. Can you have a restaurant that simply refuses service to people who are allergic to the one item on the menu?
If I find nothing on the menu I can eat, the restaurant is not refusing me service. I am declining to eat there. No restaurant is (yet) obliged to provide vegetarian choices, or to cater to allergies beyond declaring e.g. the presence of nuts.
If I find nothing on the menu I can eat, the restaurant is not refusing me service. I am declining to eat there. No restaurant is (yet) obliged to provide vegetarian choices, or to cater to allergies beyond declaring e.g. the presence of nuts.