http://traffic.libsyn.com/tii/ApplePay_GoodVevil.pdf
This PDF goes over those vendors that support Apple Pay in their stores or will before the end of 2014 - The Forces of Good. Vs those that are part of MCX - which is not going to support Apple Pay - The Forces of Evil.
The easiest way to let those forces of Evil know what you think is to speak with your wallet iPhone 6 or iPhone 6 Plus - and use Apple Pay at their competitors.
More about this on the next episode of Today in iOS.