I am a season ticket holder of the Colorado Rapids (MLS Soccer team) and twice now I've been threatened with ejection from the park for using the e-cig.
The first time, I was casually smoking it in our area. Security, who was already busting our chops for language, had one guy come up in my face telling me I needed to "put that out and that smoking is prohibited". I held the e-cig out in front of him and said "First of all, there's nothing to put out. Second of all, I'm not smoking". He seemed unphased and told me again to "Put it away and that I need to be considerate of the people around me" to which I replied "I'm sure the people around me are thankful I am using this, rather than an actual cigarette". He started to become more aggravated and told me that if I wanted him to go get the Cops and discuss this with them as I'm being lead out of the park, I am more than welcome to it. I half wanted to tell him to go ahead and do so, in order to make a fool out of him, but I decided to bite the bullet and put away. Not without a few more snide comments by the jerk.
Following week I was using it again after having read the Park rules and regulations. It says "No smoking allowed" and nothing about personal vaporizers, so I figure until they have it in the park rules, it's fair game. Well, I made it to the end of the game and as I was walking up and out of the park, I was stopped by a security lady who told me "Smoking or other variants are prohibited". Again I told her I wasn't smoking, but she was quick to say "and other variants". Since the game was over and I was leaving, I figured it was best just to walk on and not start anything since she started up the whole "won't be welcome back" routine. I did mention that it was rather stupid of them to make up rules on the fly that don't make sense.
Oh well. Our last home game is Friday. Unless I see something on the rules that say "No personal vaporizers", then I will assume it's still okay to vape. I will welcome whatever they try to throw at me.