I'm not sure Facebook likes are going to make the game changing difference. Have you considered actually approaching the owners of the chain, or at least a local store, with success stories from bitcoin adoption (Tesla purchase) and the pros of bitcoins as currency in a formal letter? I think that is going to make a much greater impression on a business owner than a bunch of Facebook likes from random people all over the globe.
Dutch sub has an open letter, as for everyone else in the world, facebooks likes please