Gaz - The annual gathering is a completely open event - it's aimed at being a meet and greet, for some of us who have been going for years, and total newbies. You and your friends would be most welcome, just make sure you bring beer - you're going to need it
As for the history - the group has been known to become embroiled in cork fights (champagne bar - very messy), human pyramids (there are photos to prove this), human piles of bodies (follows human pyramids quite closely) as well as the occassional out of hand moment (I seem to remember a bloke with a table!?!).
All in all, it's a great point in the weekend - the race is in full flow - you'll be amongst friends, and if the weathers good, it has that extra bit of something special to it. It'll be interesting this year, as it's not until midnight - we've always previously had it at dusk, but it clashes with things like the concerts and the football.... We hope to welcome you there on the Saturday - just look for the t-shirts, you can't miss us