Congratulations young man. You are about to step into a world totally unknown in your past.
My best suggestion would be to replace those touring tires with something like the Q2's or equilavent. Your chance of falling down is probably tripled with touring tires.
Other points I may suggest is look your instructor in the eye and listen intently to what he is saying. Don't interupt and waste time by giving him lame excuses as to why you ride like you do. He has heard all these excuses in the past and you are wasting his time which you are paying for. When the instructor gives you specifics to work on, do your very best to concentrate on following his instructions.
A track school is a day of learning. If you are going as fast as you possibly can, you won't learn much. Slow it down a couple notches so you can concentrate on what you are doing. Consistency is much more important than speed. By showing your instructor how fast you can go is not going to impress a man who can lap you every five laps. When pushing your limits your mind is stressed and you'll learn little. You are also much more likely to crash when you exceed your limits of comfort.
Riding your motorcycle in a track environment is physically demanding. Your thighs will burn and you will probably sweat more than normal if you are working as hard as you should be. Drink lots of water the day before as well as the day of your event. Hydration is extremely important. Don't over indulge in caffeine or take energy stimulants the day before or the day of since they tend to dehydrate you. As Skydivr says, get yourself in decent physical condition or you'll most likely run out of gas before days end and you'll give up due to exhaustion.
The idea is to have a wondefully fun day and learn as much as you can. Not to see how fast you can go or see how many you can pass. The goal of the school is to send you home with more confidence as well as a safer rider.
Enjoy and take lots of photos to share with your Org friends. Oh, and we want to see photos of this mysterious woman that thinks you are cool enough to spend the hard cash on a track school for YOU!