So I am going to be flying in Y to TLV. I would like to get comfortably drunk and pass out during the flight. When I drink I don't make a scene or anything, usually I just fall asleep and I am not looking for people to tell me I breaking a rule/law.

So I have a few questions, am I better off buying the little airline size liquor bottles at my local liquor store for 99 cents each or buying a small bottle from duty free? I am guessing it is easier to hide the little bottles, but I can probably get a better quality liquor at duty free. In the event that an FA catches me what will she do? Keep in mind i will not be making a scene.