There is a difference between what is legal to do in public and what is not in a private place. Even when it was legal to smoke everywhere, individual business owners could choose whether to allow smoking in their respective establishments. It makes little difference whether it is legal to vape in public. Private businesses choose what they want in their stores and what they don't.
The only real exceptions to this are when a business is violating federal or state constitutional law or when the state requires or prohibits certain things under the state's police power (to provide for the health, safety, welfare and morality). A prime example is when a business discriminates based upon a protected class such as race, thus violating equal protection, as applied through the various civil rights acts. They cannot do so. At the state level, the state has exercised its police power to ban smoking in private businesses, just as they have with certain food safety regulations. The point is that private property and business rights are not absolute, but one is given a wide latitude to determine how to run one's business.
When you enter a business you are an invitee to that business. If you refuse to comply with the Manager's request (who is acting on behalf of the owner) you are no longer an invitee and most probably become a trespasser. You would be the one ticketed, not the Manager. You do not have no right to vape in his store, period. You have no cause of action here and any attorney that would take a case like this should be disbarred.
There is my .02 cents (okay, maybe a bit more than that).
