Seems like the Carmine's Restaurant waitress treated the tourists from Texas, in a less than welcoming manner, when their male companions joined them. The tourists said she accused them of having "fake" vaccine cards and used a racial slur.
The New York Times has an entirely different version of the story:
A lawyer for the tourists said their proof of vaccination had been questioned “unjustifiably” because they are Black and denied that they had tried to “forcefully violate” the requirement that they show it.
www.nytimes.com