States hesitant to adopt digital COVID vaccine verification Customers wanting to wine, dine and unwind to live music at the City Winery's flagship restaurant in New York must show proof of a COVID-19 vaccination to get in. But that's not required at most other dining establishments in the city. And it's not necessary at other City Winery sites around the U.S. If City Winery tried doing such a thing at its places in Atlanta and Nashville, "we would have no business, because so many people are basically against it,” said CEO Michael Dorf. Across the U.S., many hard-hit businesses eager to return to normal have been reluctant to demand proof of vaccination from customers. And the public and the politicians in many places have made it clear they don't care for the idea.