. If someone tells you it's service dog and tells you the task it performs then it's a service dog. You do not have the right to question them further without risking an ADA violation. So there is no way for you to determine if the patron lied to you or not. Under ADA you must serve them. I don't understand your analogy. And I don't understand how you could be held in violation of the health code. Unless your servers pet the dog or you let the dog back in the kitchen where food is prepped or stored. ESA is a different story. Whether they share the same protections as service dogs is based on state and local ordinances. If I understood you correctly the lawsuit you won was re ESA not service dog.I lie to you and tell you this bag of powder, is flour I want you to deliver to my poor aunt Rita. You tell the cops, but he told me it was flour! who do you think goes to jail?
Additionally, California has eased up their restrictions allowing dogs onto outside patios if the restaurant meets certain criteria. I also researched the health risk of dogs in restaurants. Baffled why a service dog doesn't pose a health risk and a pet or ESA does. What I learned is they pose very little health risk if they are properly vaccinated. The only main health risk is if Fido pees or poops in the restaurant.