SB,
Yes, there will be Open Track on the Pitt Circuit. While registration and costs are not yet posted, you'll be able to register for them. The run groups will be divided into levels of driver skill as usual.
No, SAAC does not have instructors, so if you want or need coaching, I recommend you enroll in a school, such as NASA, CHIN, HOD, or other, which has instructors. I prefer you do, so you have some experience before the SAAC convention. I am a 18 year NASA instructor, so speak from deep experience, take a course before going solo. PM me if you have any racing school questions.
Will see you at the track, I'll be part of the track crew.