Many RI state parks are now open, but parking is limited to prevent crowding. See link below for names of open and closed parks. Most state parks with saltwater beaches are closed EXCEPT East Matunuck State Beach and Scarborough State Beach, both of which will re-open on Memorial Day (less parking, no bathrooms or concessions, no lifeguards, no admission fees).
State-run playgrounds and playing fields are closed. Most state-run indoor spaces (visitor centers, rest rooms, historic houses) are closed. Details.