This is what it says in the link that I posted above, it's off of the GameStop site.
Bonus!
Pre-order or Purchase Resident Evil 6 with GameStop and receive Special Admission to Six Flags Resident Evil Night on October 6th!
Exclusive Ride Theme Event
Free Haunted House Ticket
Resident Evil 6 Game Demos
On-Site Game Giveaways
Edit: I can't even go. The six flags near were I live was closed years ago.