11am-7pm everyday until 8/30 8/31 11am-6pm September hours have not been posted as of writing
11. Parking opens at 10
Around 11, somedays and parks might be different, u can check in their websites.
and you have to make a reservation
11 AM (closes 7) https://www.sixflags.com/greatadventure/plan-your-visit/park-operating-schedule
Like 11am
Thanks! Your answer is awaiting moderation.