As an inveterate fan, and early supporter, of Zion, I confess that I was dismayed by the experience that you described because it's not consistent with my acquaintance with Zion personnel to think that ". . . someone [was] There who is visibly sick and they did not care . . .." Moreover, I'm entrenched in my belief that "there's always at least two sides to every story." So, in dining tonight at Zion, I inquired about the situation . . . which was clearly recalled among the staff.
Another side to the story is that the manager is acquainted with the "visibly sick" patron and asked about her condition. It seems that she is a chef on the island and had three Covid tests in the preceding seven days in order for her to be allowed to continue working. Producing copies of her recent negative test results, including one done on the morning of this event, the manager was satisfied that it wasn't necessary (or appropriate) to ask her to leave the restaurant.
Of course, in view of highly wrought emotions arising from the pandemic and the enormously disturbing loss of life and lives undermined by it, some may reasonably conclude that it was poor judgment for this chef / guest to dine in a public space when she was "lowing her nose nonstop." The fact of the matter, however, in my opinion, is that the restaurant manager acted appropriately, and the restaurant does not deserve, under the circumstances, to be portrayed in a particularly unfavorable light. A broader portrayal of the situation includes information that wasn't immediately apparent in the posting that began this thread.