Make sure you take a radio with good batteries. You will only be able to actually see a small portion of the track so you’ll still want to listen to the race to know everything that is going on.
Park your car facing out so you can jump into the traffic without having to back out. Maybe get a good map and find a secondary route using the back streets.
Went to Indy once for the 500. For some reason they had the freeways closed down to 1 lane for seam work. No work had been started, nobody working on the holiday weekend, no reason we couldn’t have driven in those lanes. Took almost 5 hours to go 12 miles on the freeway.