Yes I did ask about the cash card and returning situation - I had to pick some up at the actual counter because I had purchased more bags yesterday. This is what I heard - if you decide to return the bags, simply bring the receipt and the cash cards provided. On the back of the receipt, there should be a black stamp that says something related to the # of cash cards provided and the $$ left that can be applied towards your next $10 cash card. Anyhow, if you bring the cash card(s) along with the bag and receipt, you will not be penalized. I'm assuming that this is the case if you also return it after 8/5 which would be the last day to use those cards. Hope this helps!