Originally Posted by letiole
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In the US, most any place will allow you to bring your own generally providing it's not on their wine list, it's not something low-class and revolting like 2 Buck Chuck or equivalent, you pay their corkage (which is something like $75 or more at French Laundry, but more like $15 or $20 at moderate restaurants), and you share with the wine steward. (That last part is just good manners, and depending on the wine, could get your corkage waived.)
Permissible in a few states, but most states' beverage laws prohibit the practice, allowing only alcoholic beverages purchased on site to be consumed there.
A general rule of thumb....In "Dry Jurisdictions" (precincts, townships, counties, cities, etc.) which prohibit the retail sale of alcohol or in restaurants which are not licensed to sell alcohol, BYOB may be permitted by the owner.
Exceptions and why one should "call ahead".....
Many jurisdictions allow beer sales, beer and wine sales, sales of various beverages, but not by the glass/drink/across the bar.
Just as Massachusetts used to make drinkers "sit" on Sunday, some state statutes and local regulations can be quaint and hard to appreciate.
TMO