Second-to-last time we ran a sausage sizzle, we were brow-beaten by a Vegan who was upset that we were not offering Vegan sausages. His whole family was vegan and we were discriminating against them.
The next time, we got a separate grille, a separate chiller and a pack of twelve vegan sausages. He came with his family, and true to his word, he bought a vegan sausage for himself.
His family members all decided not to have their sausage straight away, but to come back afterwards.
They did come back later, without their father/husband and we threw out 11 vegan sausages at the end of the day.