I had a similar experience at Citi Field (New York Mets). During the pat down the security guard saw my ProVari. He asked what it was and I told his it was my ecig. He kind of turn his face as said "errr...ok" (hesitant to let me in with it). He then continued to say that I may not be allowed to use that in the stadium EVEN IN THE SMOKING SECTION. Needless to say I had no problems when I used it with my former smoking mates in the smoking section but I do not know if I would have been able to to handle someone telling me I could not vape in a smoking section.