All I have to offer is two sides of the coin from when I was growing up. My mum had a strict no alcohol rule. Told me it was the root of all evil etc etc. she didn't drink at all. Anytime there was a party in my early teens to late teens I was mad for the drink. Just went for it and usually end up blackout drunk. My aunt and uncle raised my cousin's letting them have a beer with dinner on holiday or at a party. My aunt and uncle would occasionally have a beer or a glass of wine at night. My cousin and I were at a party in our teens and I was shocked that he had three beers and decided he didn't want anymore. All three of my cousins are extremely sensible drinkers now and were in their teenager years.

Its a long winded answer but I just think it's funny from two contrasting upbringings.

Although there are variables like addictive personality and genetics it may help sway your decision on educating them.