I was an outside vendor once at a BJ’s.
The lady would not let a women in with a dog. The dog was wearing a harness, no banner and the lady was holding the dog by a special handle attached to the harness.
Anyone could tell it was a guide dog for the visually impaired.
The woman also had dark glasses and a cane. The sign said "NO dogs allowed except guide dogs accompanying Blind Persons."
That is what the lady was, but the lady at the front door threw a fit. The blind lady’s companion had to run into the store to get a manager to help.
The manager got on the employee's case, of course.
the employee's defense? "Well how would I know it was a guide dog?"
And yet some people let those little pocket dogs in... WOW!!