Everyone is different, but when you're on a family vacation it's unlikely you'll be drinking as much as you'd like to be. Day drinking is just a part of a friends trip. I mean, you're on vacation. But one of my favorite ways to get the true vibe of a city is by their nightlife. For example, living in Austin I can tell you that our night life is very nonjudgemental. I've been to a bar in Nike shorts and a t-shirt before and no one batted an eyelash, which is very consistent with our culture. Getting to experience what "going-out" is like in a different city can show you how the locals act when they think no one is looking. To me, as someone who constantly thinks about what it would be like moving to a different city, it's an added bonus to see how bar-life is in other places, you know, just in case.