You provide plenty of evidence of of a guy gets loaded and cannot function well enough to be responsible with high speed internet!
Sure there are cop bars, but you were not talking about cop bars. Consider for a moment the laws here in Kentucky on that subject.
244.125 Prohibition against possession of loaded firearm in room where alcoholic beverages are being sold by the drink.
(1) Except as provided in subsection (3) of this section, no person shall be in possession of a loaded, as defined in KRS 237.060, firearm while actually within the room where alcoholic beverages are being sold by the drink of a building on premises licensed to sell distilled spirits and wine at retail by the drink for consumption on the licensed premises pursuant to KRS Chapter 243.
(2) This section shall not apply to the owner manager, or employee of licensed premises, law enforcement officers, or special local peace officers commissioned pursuant to KRS 61.360.
(3) This section shall not apply to a bona fide restaurant open to the general public having dining facilities for not less than fifty (50) persons and which receives at least fifty percent (50%) of its gross annual income from the dining facilities by the sale of food.
(4) Nothing in this section shall be construed as permitting the carrying of a concealed deadly weapon in violation of KRS 527.020.
(5) Any firearm possessed in violation of this section shall be subject to forfeiture and shall be disposed of pursuant to KRS 237.090.
Basically, as applies to civilian gun owners, no loaded guns in saloons, openly or concealed. That would include the "bar area" of a restaurant.
A. Negligent use of a deadly weapon consists of:
(1) discharging a firearm into any building or vehicle or so as to knowingly endanger a person or his property;
(2) carrying a firearm while under the influence of an intoxicant or narcotic;
(3) endangering the safety of another by handling or using a firearm or other deadly weapon in a negligent manner; or
(4) discharging a firearm within one hundred fifty yards of a dwelling or building, not including abandoned or vacated buildings on public lands during hunting seasons, without the permission of the owner or lessees thereof.
So someone carrying a concealed weapon in a restaurant that happens to serve alcohol is fine as long as they are not drinking....or stoned.
You might need a dose of reality as to human nature. Those individuals, who by nature, are responsible, reasoning adults tend to behave sensibly without need for a law. Idiots and assholes tend to be idiots and assholes despite any law, the law only serving as way to exact retribution for their assholishness, after the fact.
Don't drink and drive or toke and tote are useful admonitions but unneeded by those who are disinclined, and ineffective on those who are. I'd wager odds on the broadly, both categories have repeat or habitual offenders. Most drunk drivers are driving on a revoked or suspended license anyway. The guy carrying without a license likely can't get one as he is already a convict. Until Claire Voyantte at the Bureau of Future Crime lets you know who the crooks are ahead of time you will just have to until they make themselves known.