Made a reservation. Showed up at reservation time....

Made a reservation. Showed up at reservation time. No crowd at all. Got on our 2nd ride and was told they are closing early and that time is in 15 mins. We were able to ride 1 more ride and then closed. No mention of early closing on the website. 1 hour drive time for 30 mins of play time. Not happy at all!! Six Flags get it together.