>>6604529You need to know what cute clothes to buy for me.
Seriously though, there's not a lot to know. Turn up at least an hour early if there's anything specific you want. Popular circles will start selling out after an hour or two. There's a desk outside you buy your programme/ticket from. Bring something to drink. Enjoy the queue.
I've only been once though. It's only a small event but I loved it.