Ah, good point, free concerts. I like it.
Your right about the drinking aspect. Problem with drinking is that when you start you seem to want to find where your limit is. These days I know 2-3 beers or maybe two small glasses of wine are about it for me and even then I'll need no where to go for a couple hours. But, back in the day when I did not care about being in control, or practicing temperance, my limit was when I passed out, threw up or what ever. Honestly I was not that bad. In fact I did not like to drink that much....little trick.... college at parties. You grab a beer, take a sip, then pour it out here and there when no one is looking. That way your cool and sober without being a prude.
Seriously though, I think being 19 is a big deal right now, and as you get into the young adult years. You have to be more careful now. You'll meet all sorts of folks out there, and I'm sure you have. So, staying sober will help you make better decisions when your around the "crowd." Good choice not to drink. Try to stay within that as much as possible, as you get older, you might indulge a little more responsibly perhaps, but also keep in mind that alcoholism can sneak up on a person so much so that one can find they can not be anywhere around it.
Keep safe my friend,