My Wife and I go to the Michigan race (MIS) both races. We have infield slots, on the rail in June, and in turn 4 in August. If you plan on going each year, like we did, you can trade your slot in at the beginning of the year to get better ones. problem is that you have to buy the bad slot and hope to "trade-up". It's a real hoot though. we get there on late Tuesday or early Wednesday. Then we leave either late Sunday or early Monday. Slots cost $ 150 for the inside and $ 200 for the rail. Then wristbands are $85 or $ 100 per person depending if you buy them early or not. We'll be there right in the middle of turn 1 and 2 this June.
31' American Star 5th wheel