aayaey, sometimes the MSC will allow for a picture of the items you bought at the concession. Why not take a picture of the food items before you eat them, as well as the receipt? I had a shop at the airport and could not find my coffee shop receipt. I went on my cc company's website and printed the pending charge that had all but the server's name, which I had. I submitted it (covering identifying info) and submitted it with the shop. I received a message to hand write a receipt and submit it. I got paid. That might woprk as well for the future.