Here are some suggestions from a newbie that attended the HPDE at Sebring put on by the Corvette Museum.
Bring sunglasses and test the sunglasses with the helmet on. Sometimes it can make a big difference with sunglass fit with the helmet on.
Please, please, please upgrade the brake fluid to a high temp fluid. Has good as our brakes are, the fluid needs a little help.
Bring a Go Pro if you can. It real adds a lot to a very memorable day.
If you own a ZL1, you owe it to yourself and the car to see what she can really do. If you are a novice, the car is already much better than you are. To a skilled driver, she will make you better.
Have Fun !! It will be the best money and the most fun you will ever have !!!
Be safe and take lots of pictures for us to enjoy. I wish it was closer or I would be there for sure.
Walk softly, carry a light saber and drive a ZL1!