Be sure to bring enough money. Heres a list of optional events you may want to do.
Optional Events:
Drag - $7 to watch, $20 to race
Go Karts - $5 for 5 mins, $8 for 10 mins, $10 for 15 min
Dinner at Buckets Sports Bar and Grill - Moderately priced (~$6-9 for a meal)
-May want to bring money for the raffle. The prizes are bigger and better than last year so you may be pretty tempted to win some stuff. $5 a ticket. Unlimited tickets are available. Trust me, I've got plenty.
Other things you dont want to forget.-Definetely bring a change of clothes that you can wear to account for hot or cool days. It may get a little cool during the evenings depending on the weather.
-Sunscreen. Myself and many others got pretty cooked during the Show N Shine last year.
-Car detailing products. You may want to give your car a little TLC before/during the Show N Shine.
-A chair to sit in during the Show N Shine, dyno, etc.
-A camera or video camera definetely!
-Cash or quarters for a car wash.
Thats all I can think of for now.