Well, my son was holding AA platinum and Thai Gold at the same stage, and he has been flying with his younger sister as UM on many occasions.

I undestand the point with the lounge. In some airports, they have kids lounges, which make sense. In some airports, they have been left on their own in lounges, where they have alcohol, as it seems easier for the staff to keep a look at them. So personnally, the law is the law, so if a country say no under 18 (or 19, 20,21) because we serve alcohol, that's the law, and we shall abide by it.

But as a commercial point of view, a 12 years old is a full fare customer...why deny him a service you offer to others. This is the main reason why I'm not DM anymore.

I see that I can agree with midlevels and cathay boy...no reason can also be a good reason...