I have a concealed carry permit and I think you are a fool to carry openly. You make yourself a target for a bad guy. I carry most places I go. If there is a sign saying guns are not permitted, I find another place to do business. I have a business card that explains that I won't do business in such an establishment and I give it to a clerk to give to the owner. As far as Starbucks goes, since I carry concealed, I would still go in with my firearm but no one would know and therefore there would be no uproar. If I were carrying openly, I would not go in.