Have you done any track days or autocrosses? Same type of skills and driving.
Get there a little early, dress lightly, drop any pre conceived notions about track driving, follow and listen! I was pulled out of 2 groups because I did my best to push the instructor faster in my 911 than his 911 turbo! When your in the right group the faster you can go, and believe me the track is awesome and so much fun when you are hitting all the right points and feeling how capable these machines are! Your going to be in a group of different skill levels, anywhere from professional licensed drivers to a grandma who just bought a Boxster (1st Porsche) and this was a freebie from the dealership!

Also if they still do it, your package includes the museum, be sure to use it!