Just get your tickets/credentials when you get there. Really no need to purchase your "tickets" before hand. If you want to race/run your car, its $70 for the entire weekend. That gives you Fridays T&T and bracket racing on Saturday and Sunday. At a minimum, you would get 3 runs on Friday, 3 on Saturday (2 time runs and at least 1 round of eliminations) and 2 on Sunday (1 time run and at least 1 round of eliminations). The $35 3-day weekend pass will get you total access to the entire track so for $35 more, you can also race your car and have fun experiencing that if you never have before and maybe even win some money.