I have been trying to find specific info on your question, but have had little luck. Unless this is something new for this year, the basics had an Airmanship Demo day about mid-July. I do not know if there is something similar scheduled once the academic year starts.
I'm hoping a current upper class cadet can chime in here.
As for tandem jumping...I seriously doubt this will happen; the cadets do not train for this. USAFA is the only place that your first jump is unassisted free-fall, after extensive ground training, of course.