My B&M, ViBratto's, allows "cigar customers" to bring in a bottle of wine, spirits or beer. The owner's rule is
"If you want to bring something to drink in here, you better be buying a stick (or more)".
There is a wine shop next door and a lot of strangers buy a bottle and come walking in, asking if they can sit and drink the wine because the wine shop has a no smoking policy. That's where the owner's rule comes into play.
Regulars are always allowed (and encouraged!) to bring in a good single malt scotch or single barrel bourbon to share with their friends.
This is where I have been learning all the fine points of single malts!
