So far as I know, there are (as yet?) no laws regarding vaping here in GA; that map doesn't indicate anything in GA, and I haven't heard the first thing about it. So my own plan is to just proceed pretty much as I have been with my smoking: outdoors where there are no rules against it (there aren't really a lot of "no smoking outdoors" laws in this state, for which I'm very grateful), though of course it will be a huge relief to be able to partake in my own home without the nasty smell. In places like hospital parking lots, I will just sit in my vehicle and vape, and if anyone says anything, to just point out that "I'm not smoking, and there is no law against vaping." I've always thought that law about not smoking IN YOUR OWN CAR in some parking lots was the utter height of control-freak ridiculosity, and I have seldom observed it in any case. But that's just me, and I know some folks feel that it's necessary to bow and scrape to every ridiculous tenet of the law, rather than practicing civil disobedience to the ones that make no sense whatever (those folks are the ones that always drive EXACTLY at the speed limit, driving the rest of us crazy).
In places like restaurants, I think it's a matter of courtesy more than anything else: if you don't see any "no vaping" signs, and you ask politely and no one minds, then why not? Here in GA, there's a loophole that pretty much exempts bars from the no-smoke ban: under 18 aren't permitted in there anyway (not that I go to bars anymore, I'm just sayin...), so smoking is permitted. I wouldn't dream of doing it in a movie theater, because even if there's no smell, the "fog" could conceivably obscure the screen, and that would be as annoying as Wilt Chamberlain in a big hat sitting in front of you.
Maybe it's a cultural thing; in the south, there does still seem to be a lot more courtesy and politeness, which I, as an Atlantan, have more or less always taken for granted (though Atlanta has been well-colonized by folks from all over -- as an ATL native, I'm quite a rare bird!), until I visited Charleston, SC a few years ago, and was absolutely bowled over by how NICE everyone is -- even the pimply teenage counter help in fast food joints, just nice and polite and warm as they could be. At that time, some parts of Charleston had the smoking ban, other parts (Mt Pleasant? I think?) may not have had an ordinance to that effect, but when I inquired of the waitress in a restaurant if there was a smoking area, she was so genuinely apologetic about there not being one, that I simply didn't mind at all, taking my stink outdoors -- it's hard to be annoyed about anything, to people as nice as that.
So maybe, since the worst parts of actual smoking are absent from vaping, to vape or not will come to be more of a courtesy, and less of a legal ordinance. I guess we can only hope for that civil an outcome.
Andria