Damn it, I completely forgot about this. I'm on holiday this week so I will miss it
I've been for the past few years, it is a pretty good event. Very interesting to see all of the old classics, I went with my Granddad a couple of years ago and he loved seeing all the old bikes he used to ride.
The only thing I would say though is that the "scream by" is a bit exaggerated, the track that they use for the competitions is a bit cramped and they never go particularly fast. Probably for crowd safety issues more than anything. The parade is good though.
It is more of a show than anything but it is definitely a good day out.