So, we also bought some toppers rhum in the big bottles which was a pain to pack with our ma dou dou. Basically a whole checked bag for of rum and padding clothes.

But they sell and we bought as gifts some smaller bottles which are carry on and great for gifts. And yep duty free liquour stays in your hand carry thru TSA pre screening in Charlotte. No you cant take a 3.x oz bottle of water or coke but you can take duty free liquour. Figure that out.

Mandou dou comes in some little bottles, maybe they are under the 3.4oz limit.