I am actually trying to remember if my DC were as old as 8 when we let them have alcohol at Christmas.
We let them have small glasses of wine, shandies, spritzers. They didn't like snowballs
, but liked a weak Martini and lemonade. Both DH and I were allowed it as children, so we passed on the tradition.
When they got to 14&15 if they went to parties, where they were supervised, we allowed them to take 3 or 4 bottles of beer or lager.
They are 19&17 now. Neither are big drinkers. They have never come home falling down, puking drunk. DS1 might have got like that in Malia, I expect he did tbh, but that was one week of his life.
The kids who go out on a weekly basis chucking alcohol down their necks until they puke, are the ones who had it hidden away, who weren't allowed it, who were made to believe it was bad.
I am happy with the decisions that DH and I made regarding our DC and alcohol.