Here's a hypothetic situation I question:
Let's say you go with a loved-one to a new restuarant you've never been to before...and your carry (as usual). It's a nicer resturant known that's nicer than average. Upon arrival, there is no gun-prohibited signs, no alcohol advertising signs, and no bar that you know of.
You go in, and there is no evidenace of alcohol at all. You are 3/4 way through your meal and you see a waiter walk buy with a beer to serve someone. You NOW know they servce alcohol.
Of course, most people aren't going to jump up and go to the car to stash their piece. So you simply finish your meal, pay, and leave.
In the parking lot, you are assault by someone for some unknown reason, but it becomes a SHTF situation and you kill or injure someone.
The police come and want the story. The shooting occured in a parking lot and was justified...but if you say you were walking from the resturant, it will be known you had a weapon in an alcohol-serving facility...and that's a violation. You can't say you saw trouble and went to you vehicle for a gun, because not only is that a lie, but that shows you may have had time to get away if you had time to get a gun from your car.
Some people may say...you should have taken your weapon to the car as soon as you saw alcohol in the restuarant. If that's the stance, then say the assault happened as you were taking the gun to the car then.