Email NY amusement parks are open. Here's what to expect from these 10 parks in 2021 New York boasts two Six Flags theme parks, but that's not all. Don't miss these thrill and water parks in NY on the next family adventure. Mario Marroquin, Karen Croke and Shaniquah Gabino, Rockland/Westchester Journal News Published 2:19 am UTC May. 24, 2021 Last year was a rollercoaster for amusement parks. Ready to open with new amenities and attractions, all were forced to close for the entire 2020 season due to the coronavirus pandemic and government-mandated restrictions. With vaccinations on the increase and the pandemic easing, restrictions have loosened. And in early May, Gov. Cuomo announced that outdoor amusement parks could open at 100% capacity so long as six feet of distance could be maintained and mask wearing was enforced at amusement parks.