When the races are over can I bring my 11 year old into the put a to see the cars

Yes you can

anything schedule in mid August?

No. You Need A Pit Pass.

Practice and qualify days you can. Not to sure about main event days?

Yes

Most certainly! Interaction is encouraged.

Yup

Yes! If there not busy

You certainly can. Just be careful, although the racing is over, there is still a lot of activity going on in that area.