Yes. You can use your pass/membership at the park. They also honor the parking pass.
If you have a season pass or membership I do believe you can go to multiple if not all Six Flags locations. I have done this in the past. If you have the app and select "My Six Flags" on the bottom, then the ℹ️ next to your Membership. It'll tell you what locations you can go to.
should be honored at any six flags theme park. Management is real easy to get along with...
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