In reply to Fiona McFarlane:
Take 2x60m ropes, then you can abseil straight to the ground from the top of the 2nd pitch, avoiding any diagonal chicanery.
Take a knife to cut off all of the rotting tat at the ab stations. You might want to take some of your own, we just reasoned that 15 bits of old tat were unlikely to fail simultaneously.
The crux is a bit graunchy, but not too tough for 5b. The sandiness was also much less of a problem than I was expecting.
Lead the top pitch - it's one of the best VS pitches I've ever climbed.
Fulmar vomit is at least as unpleasant and foul smelling as everybody says, but I found it washes out just fine.
Stay in the bothy at Rackwick Bay - it's well appointed and a truly beautiful spot.
I can't think of any particularly relevant training you could do. Just be sure you're competent with ropework.
Bring one biggish cam to protect the crux (WC 4 perhaps?). A few large hexes are also useful for the main pitch, but not crucial, as are a few mid-long slings to clip the in-situ threads.