The letter I got suggests you have to collect your starter pack / timing chip on the few days before the event which sounds like it will be inconvenient for those not near London…
You can nominate someone else to pick it up on your behalf.
Last year it was up at ExCel in London, very easy – took about 15 minutes to collect everything and then there was a small cycle show – stands from Wiggle, Endura, Lezyne which was worth a look. Loads of people buying waterproofs for some reason… 😉
where do people park if it’s too far to ride to on the day?
Just pick some random side street a few miles from the start?
If you do that make sure it’s well away from the road closures! North London works well. 5 mile ride in to Olympic Park in the morning from Stoke Newington/Camden, 5 mile ride out from The Mall afterwards.