Yep, I've been, brakes were fine, I had std brembo discs and ds2500s at the front and oem at the back.
I think with the 'ring, if it's your first time you may actually be harder on the brakes then someone who's been there a few times as you may use the brakes more on blind crests for example where someone who's been there a few times wouldn't.
Edit. Just seen from your sig that you're not in an LCR so not sure how helpful the above is. What I would say is, make sure the cars in good condition overall no leaks, plenty of tread on tyres although doubt you'd take much out of your tyres. A lot of it is high speed stuff so you shouldn't be anywhere near the limit. Do make sure that you do have enough meat on your pads though. If you don't then yes, I'd change them before I go.