Good to have picked up on this thread again with some more information available after all the initial puzzlement. I'd echo Paul Davenport's and Hils' posts in particular. Oh, and neither am I on Facebook yet ... and nor can I afford £80 for a weekend...
But I still hope it goes well for the mysterious organisers this year and that if it happens again in a future year, then perhaps we might just get to hear about it??
Assuming that PMs are back on by then..