You could have done a much better job explaining what Bitcoin is haha. But who am I to criticize? At least you are talking to merchants about Bitcoin
I would argue it would be more effective if the person were to look it up himself instead of forcing him to hear about it when he probably has a line of people to "ring up"
With that being said I would find it very unlikely that the cashier at a retail outlet will have any influence as to what payment methods the store chain accepts.
I agree. I don't think that you are going to get any company to accept bitcoin by talking to one of their front line employees. There is a good chance however that you may have gotten someone with the resources of a minimum wage job to start using bitcoin.