The biggest shock you will have it the shear size of the event this weekend.
As for the nickel and dime, expect to spend a lot more than that

I am amazed how much a beating a race car takes over an hpde car or tt car.
Here are my tips on getting though the comp school:
1) Hydrate, hydrate and hydrate more. When you come off the track have a gallon of water waiting. Mix up a combo of water and Gatorade. Lack of hydration will show in your last session Friday around 5PM. That is when you will make mistakes.
2) Bring spares. Hell, have a backup car available if need be. Especially if this is the car's first time on track.
3) Sleep...make sure you are well rested.
4) Study the CCR
5) Get to know your partner Thursday evening. You will be spending all day Friday working with them.
6) Ask questions in the classroom, but don't be a smartass. The NASA officials take this very seriously and you want the racers on the panel to walk out with a positive impression.
7) There is no trophy at the end. So make calculated passes and error on the conservative side.

Pay attention to the flags!!! They will give you an idea when the red flag is going to be displayed. Help yourself, calculate where you will most likely be when the flag is coming out. Every class has at least one person fail because of the red flag. I would not surprised if they really hammer you on the flags after Summit last month.
9) You will not have any time between getting off the track and into the classroom and from getting out of class into the car. You must be in class on time and on grid. Make sure all of your equipment is arranged and things like the cool shirt hook up are easy and quick.
10) Have fun...you will get a ton of track time and do things you did not think were possible.
_________________
Jim Pastorius
2008 Silverado VortecMax
1992 Camaro
CMC#92
2002 BMW R1150R
2009 3rd Place CMC Mid-Atlantic Championship
2009 CMC Hyperfest Winner