This was the most incredible, magical experience I've had in a long time.
Not really dance, more just pure performance, you could make what you wanted of it - but there's no doubt that several hundred people left their tent tonight feeling joyful and excited. At one point I looked around me to see that pretty much everyone had a look of childlike wonder on their faces. By taking very simple things and doing them on a large scale they tap into a wellspring of wonder that's incredibly hard to tap.
I really have no way to describe it - and I feel that almost any attempt to do so will leave you thinking "Is that it?", but you can get a sense of things from
this writeup, and I completely agree with their suggestions of (a) taking clothes with that you don't mind getting a bit wet (not soaked unless you want to be, but you're going to get a bit of spray on you) and (b) standing as close to the middle as possible (things happen on all sides, and extend into the audience at various points - if you're not in or near the middle then you're going to miss out on things).
I was lucky enough to see it half price - but even full price it's well worth it. I've never seen anything like it before, and there's damn few things you can say that about.