Wellies.

That's what you'll need if you're thinking of going to the motogp this
weekend. Looks like there's plenty of standing water there.

 

And if you haven't got any now, you're going to be SOL.
http://music.guardian.co.uk/glastonbury2007/story/0,,2107713,00.html

 

I'd be surprised if they sold that many over the weekend - the vast
majority seemed to turn up prepared for a change.