As far as track days go, what do you do for preparation (besides seat time)? I've always wondered. I have a gal friend who races regularly and I always wondered.
the things i can think of off the top of my head are
tires and brakes must be in good condition
remove the mirrors
disconnect the headlight and brake light
tape over the headlight, brake, and turn signals
find out if you need to replace your coolant with water
suspension setup
remove the license plate and bolts
you may be required to safety wire parts on the bike
if you have two piece leathers they will probably have to zip together or you can use a 1 piece suit. also you may be required to wear a back and/or chest protector.
some things depend on the track or class you'd be participating in.