I'll tell ya what NOT to do. Don't go to the Castro with a friend who wants to hook up with a very nice young man I thought was a woman. Don't go to the bathroom and when you get back accept a drink your friend hands to you.
I would tell you other things not to do, but after that I blacked out, and ended up in the hospital. Turns out I'm allergic to whatever drug the very nice young man slipped in my drink.
But I do highly recommend Blondie's.