Ban sale of Alcohol in airports and on planes. If you wish to buy alcohol the airline will have it ready for you to collect on arrival. This would actually make a huge difference as no more carrying of a couple of hundred kilos of booze on flights.
Been saying that for years. I survived many long flights as pax on RAF Transport Command with nothing stronger than instant coffee or weak orange squash. Never going to happen of course, the aviation industry has a vested financial interest in flogging drink to passengers as they hang around in airports.