larry3100,
Most places in NC are VERY OC-friendly. I've been OCing almost every day for the last 3 years all over Eastern NC (and occasionally in the Raleigh area, and a few times out west and in Charlotte) and I've never once had an issue--not even been approached by an LEO.
The only place you might have problems are in Cary or Durham, because they have some oddball local laws, but the VAST majority of the state is VERY open to OC.
IF you have a VA CHP, that is a plus. IF you are approached by a cop, and he insists on seeing an ID (which, technically they can't do unless you are operating a vehicle, but they sometimes ask during "walk ups"), and you don't want to cause a fuss, just give him your DL and CHP. When they know you have a CC permit, it helps.
MWAG calls are not very frequent down here. In fact they are pretty rare, based on the history of this forum.
And the GAttTotP charge is INCREDIBLY rare. It is used as a 'pile on" charge when people are doing other stupid or unlawful things, but it is almost NEVER a "stand alone" charge, and it NEVER sticks in court if all you were doing was lawfully OCing. It is a VERY specific charge that has VERY specific requirements to be met to be applicable. "jeffrey xd45" covered the exact wording of the law, so hopefully between his post and mine, you are more at ease, and understand the REAL way this law works. There is a LOT of hearsay about the GAttTotP thing, and the sad fact is, most cops and CC instructors have absolutely NO CLUE as to the true nature and history of this charge, and sometimes try to use this charge as a way to discourage people from OCing.
OC is 100 legal in NC (with a few restrictions).
I would tell you not to worry. If you want to OC in NC, then Carry On!
Be polite, have a smile, and don't get snappy or snarky if other citizens (or a cop) asks you why you are carrying. And if a business owner (or employee) asked you to leave their establishment, then just politely leave.
What parts of NC to you visit? More specifics would help us tremendously to give you a better assessment of what you might expect.
Enjoy your time in the "Tarheel State". We respect OC down here, and generally (with a few restrictions) it's very similar to VA, with regards to the acceptance of OC by the public.