Well, I've always condoned common sense when it comes to vaping in public. However, there are times when "stealth vaping" is necessary. One instance that stood out for me, was when I went to Six-Flags. upon entering the park, they check bags and pockets with metal detectors, so I had to bring out the Ecigs for them to see. They told me "I know those are E-cigs, but I will have to ask you to use them in designated smoking areas". Since I was a recent smoker, I knew where all THREE of them were. When I felt the need, I obeyed their rules, and walked to the nearest smoking area. The place smelled like an ashtray. While I was vaping, I was thinking "I switched to E-cigs to get away from this, and now they're telling me to go back to it??" To further add insult to injury, The whole area was sponsored by Blu E-cigs.. with the motto "smoke virtually Everywhere".
In most cases, I say don't vape in an enclosed public area. I also don't advise vaping near any eating areas. I do stealth vape once or twice to get me through a movie in a theatre, but for the most part, I don't blatantly vape in Wal-mart.