On Friday the 20th, the town of Wilmington, Ohio (which is just north of Kings Island and just south of Columbus) is having a big Harry Potter festival.

Details can be found at the following link:

http://www.hp-ohio.com/wilmington.html

Dave the Dead from the "other" halloween forum is making a Harry Potter themed haunted trail!!! So you know it should be well themed.

Sounds like it will be fun, and you can purchase your book just after the stroke of midnight!!!