Start around 7pm and goes on until 2am. No special passes needed. Just turn up and enjoy.
I'll be there, so if anyone fancies meeting up, let me know.
On a side not, Universal and Busch gardens sent out there flyers to passholders. Next weekend is the free night for Bussh passholders, so contemplating going!
Universal have some deals also.
The one time a year that my local Cedar Fair park becomes an immersively themed destination is at Halloween. I am anxiously awaiting this year's Halloween Haunt.