As far as what to expect:
Just guessing, as I've never counted, but usually 100-200 bikes, nearly all are recent sportbikes from the "Big4". Some of the stunt/street crowd.
A handful of Euro bikes, occasional Buell, Harley or such.
Some vintage/classic iron. Usually 3 or 4 Ducati Superbikes, sometimes a couple of Monsters.
I have not witnessed any really bad behavior there.
As long as you ride in and out in a sane manner, the local LEO's are gonna leave you alone. If you leave at full throttle on one wheel, you may get pinched.