For our tasting room, we would prefer payments to be cash only but we know that would not be the best atmosphere for customers -- especially since I myself am one who rarely carries cash on hand. So we looked into different options and settled with Square.
With Square You get a FREE credit card swiper that plugs into an iPhone or iPad. There are no monthly fees and now no fee per transaction -- just a 2.75% per swipe on the amount charged. So for the initial phase this seems like a good move for us.