Sweet. I been using my Isis wallet every once in a while at the vending machine of my job. They have a number of items $1.00-$1.65 so I can basically get a free item through Serve. Well today I got notification that I received a free item compliments of Isis up to $5. I was able to get 2 sodas. (Might have gotten 3 but I think it timed out on me.) Then after making the purchase that I intended to, I got notification of 3 more swipes until another free item. I am pretty sure that this is vending machine specific but if you are using Serve with Isis, it's worth looking for places that accept these and taking advantage of the $50. For instance, McDonalds, CVS...