You know, I am coming to a conclusion that the only airlines which enforce any kind of drinking age limitation are the US ones (alcohol served only if you are 21+ or look like you are 21+) and the Islamic ones (no alcohol, period).

Maybe a day will come when the US government will realize just how dumb the whole "21+" thing is. Instead of teaching teens moderation by letting them drink when/if they desire, they are just being taught to binge drink on the few occasions when they have such an opportunity.