I agree with mamashtakeh and charliehall. Kapusta’s idea, IMHO, can only work for a limited time. Another name is right, but before it gets to that, determine if you really need to avoid eating there.
Your idea, Sender Av, of not eating anywhere so as not to insult them, is only good if it’s practical. It would be a tremendous sacrifice on your part, and, not knowing the individual circumstances of your life, I don’t know if you could pull it off.
Whatever you do, hatzlocha!