Your host is a foodie
Foodies loves to flock together. And any self-respecting foodie, whatever the occasion, will always appear with a mysterious bottle on which they're the expert. They will know its provenance, how it was made, the ideal food to pair it with and the secret way to find it. But you don't have to play by these connoisseurs' rules. Just come as you are, with what you like and know.