All of what has been said here is very valid. Just make sure you do a thorough check of your car. The link below is a start. it is the SVTOA tech inspection form for their Ontrack events.
Bring along a plastic tote / bin and put some bottles of fluid that you might need (brake fluid, ATF, coolant, oil... etc). Also bring an extra set of brake pads... just in case.

http://svtoa.com/events/tech%20inspection%20form.pdf

Otherwise have fun and if it is available make sure you have an instructor with you in the car. It makes for a great learning experience and increases the comfort level.

Cheers

Fern

1999 SVT Contour Silver Frost Bassani,Ground Controls Street..17x7 Rage 5.0/Falken Azenis Sport 225/45/ZR17 Track...Kosei K-1 17x7.5 Avon Tech Ra 225/45/17/ Quaife/ SPEC Stage III/ Fidanza /Capaldi Racing 4.5 final drive/TCE Brake Kit 13"