Found this on reserve America today:
RI STATE CAMPGROUND OPENINGS DELAYED UNTIL JUNE 15
No New Reservations in June.
Due to the COVID-19 emergency and in order to protect the health and safety of visitors and staff, the State of Rhode Island has delayed the opening of the state public campgrounds until at least June 15, 2020 and is not accepting new reservations at this time.
The Rhode Island Department of Environmental Management will continue to carefully monitor the COVID-19 emergency and provide updates as they relate to our facilities. For additional information or updates on Rhode Island state parks and campgrounds, please visit Rhode Island State Parks
A quick look around the park showed scattered 2 and 3 night vacancies.