In NC you CANNOT conceal carry with ANY alcohol in your system. You can have a firearm on you but it cannot be concealed.
I have a conceal carry permit and do carry quite often. However if I have been drinking at all and am pulled over or riding in a car that has been pulled over I take the handgun out before the officer comes up to the car and place it on the dash...put my hands in plain view and I don't make any sudden movements without telling the officer about the weapon and also the fact that I'm going to reach for whatever...like my ID...or the registration etc.
I'm not saying I get drunk and drive but what I am saying is I have had a beer and drove and got pulled over while in possesion of a concealed weapon. Before the officer walked up I just pulled it out...layed it on the dash...put my hands at the 10 and 2 position...informed the officer of the weapon just in case he hadn't seen it and told him I had a beer and that's why the weapon was not being concealed.
He took my gun...ran the numbers...looked at some of my ammo in the mag...had me blow into the handheld breathalyzer and then told me to have a good day and sent me on my way.
I've also been a passenger in a car that went through a license check...I had been drinking but not the driver and I again...placed the handgun on the dash...informed the officer that it was there just in case he hadn't seen it...told him I had a conceal carry but had drank a couple of beers...made no sudden movements and all was ok.