My guess is no based on my experience in DOH. I was flying QR, and I had no idea about the "double security" so when I cleared security, I bought Coke products because I hate Pepsi, and QR serves Pepsi products. SUCH a minor issue, I know, but it's my simple pleasure. QSuites, Diet Coke (or Coke Zero in that case), and then a good sleep. Nope. No liquids. I was shocked. (I traveled so much I was really surprised by this--proof we never know it all, huh?!) Security said if I bought it in a duty-free shop and it was sealed, I could bring it, so I trotted back to the shop. Nope again. They ONLY did that for alcoholic liquids, they said. Defeated, I asked them if they would refund my purchase. They did that, so I wasn't out any money, and I tolerated Diet Pepsi for 14 hours. Let's just say I ate a smaller meal :-) We Coke-Products people are really... different.