Yes, but there's always the holidays. My brother is three years older than me, which is a fair gap, I suppose.
The drinking age? Do you honestly mean to say that if a grown man of twenty wants a beer, he'll be refused it? America is a strange place. I shan't be an adult until I'm seventeen, but I know that boys my age can join the army, and there's a school rule against visiting pubs but it's hardly illegal. Fortunate fact: you aren't in America now. You ought to come along to the pub with me. I'll teach you a few card games.
Can you transfigure objects, or alter their properties?