I stealth vape in Walmart and grocery stores, but it has to be an aisle where no one else is shopping. Personally for the small amount of time I spend in grocery stores I don't jones and could also just leave the unit in my car. But it feels neat that I can get away with something I technically should not be doing. In hotels I vape freely in my room even if it is non-smoking. On Amtrak I have to be careful. I keep a watch out for conductor if I have no seat mate. If conditions are bad then I head off to the rest room and vape. I was in NYC last spring and asked the bartender in the hotel lounge if I could vape. She allowed it. (She also informed me Marlboros were 14$/pack in the city). I have never had a problem vaping in my auto. I figure people think I am smoking. If cop pulls me over, thinking I am smoking pot, the jokes on him...or maybe we'll win a new convert.