What are the bicycle parking facilities like and is there a parking fee that applies to them?

I've never seen a bicycle in the parking lot...You're probably better off with calling them directly for this info.

"Thank you for contacting Six Flags Guest Relations in regards to your concern. There is no fee for bicycle parking, it out front directly behind the Toll Plaza near the Motorcycle parking. If you have any other questions or concerns, please feel tee to contact us.  Thank you, Chrishae Powell | Membership Services"