Might be a good idea to take care of the obvious things: no loose spokes, throttle returns ok, handlebar ends plugged, lever ends aren't snapped off, footrests in good shape, etc.
I was actually pulled up by an official at Wonthaggi last year for wearing a jersey with 3/4 length sleeves (my ignorance), so make sure your gear at least looks respectable.
Have heaps of fun (you will), and if (when) you're passing me, go easy on the roost!
Tex