I just found the spot on Kings Island's web site that gives info on the events:
http://www.pki.com/events.jsp
That explains the where (Cin. Loveland HS for the music festival) and a few of the details on the events. Has anyone been there on these days in past years. I am hesitant about this Saturday now. Those two events alone will bring in well over 10,000 not counting chaperoes, parents, friends, etc.