I can't stand beer, really; and I'll drink coolers, but they're kind of cheap, taste-wise.
Typically, I like a good sangria with fruit in it, but otherwise I go for drinks involving hard liquor (martinis,mojitos, long island ice teas, etc.; I can handle vodka, rum, and tequila pretty well). In a low-end venue, I'll end up getting sours (whiskey or amaretto). I will do shots on occasion for fun with a group.
I have a soft spot for drinks containing amaretto, triple sec, banana liquor, pucker flavors, and especially for kahlua.
If we are not talking just booze, I typically drink water, OJ, coffee, or (on rare occasion) caramel macchiatos.