When did your son start attending these Prospect camps?
Can you attend one too early (I.e. 9th grader) or is it better to wait? ----For this question, let's assume the RC hasn't invited you. If you've been invited, I think that question of when is already answered.
Is there a downside to attending early as an underclassmen?
Or... is it (attending early) a way to get on the radar as someone to watch over the next two years (assuming attending as a freshman?
How do RC and HC typically feel about underclassmen attendance -- Let's concede that that like the money the player brings 
. I know they will pay attention to the campers they invited but will they also focus on everyone else?
Do the coaches at the camps offer feedback on development areas?
Did you use the time on campus to see the university? What did you seek out to see specifically?
Did you contact the RC or HC ahead of time to let them know you were attending?
How did these camps fit into your overall plan?