It isn't hard to obey no smoking regulations. But really, one never hears about somebody getting caught smoking ciggs in a no smoking area. Just vapers it seems. But that is an indication of the weird times in which we live, ain't it? Ignorance reigns supreme.
I have to confess to vaping in the biffy on AC more than a few times. You would be surprised at how many stewardesses will look the other way. No harm, no foul. But be prepared to be exposed as an enemy to humankind if you get caught. Purge the heretic!!!