The bar is not subject to any discipline unless the patron is under the legal age.<quoted text>
You are correct, the owner may request ID, he is not required to but if a person is caught in the bar without ID by the authority the bar is subject to fines. Do I like the law? No.
No problem in importing a bottle of spirits, I go to Canada on a regular basis and often bring back a bottle or two, I declare it at the border. No problems. I know folks in southwestern Washington and cross the border to purchase spirits. Do not know of a case where there was a problem.
Galt may have confused the one gallon state importation limit with Virginia, or perhaps Pennsylvania, where any liquor importation is illegal.