H. P. Williams Roadside Park offers access to the wildlife and habitats of Big Cypress, including cypress knees that help stabilize trees in swamp environments, Florida panthers that range widely in search of prey, mature cypress trees that may be hundreds of years old, alligators that move to deeper water in the dry season, great egrets that nest in cypress stands, bromeliads that grow on trees while drawing nourishment from rainwater and debris, wood storks that roost in cypress strands at night, and rare orchids that attract insect pollinators. The area also provides opportunities for wildlife viewing, walking, biking, driving, hiking, off-roading, and canoeing, with visitor centers offering information, films, educational materials, and trails. Regulations stress protecting wildlife and habitats, following camping and fishing rules, keeping pets leashed and restricted to certain areas, and preparing carefully for changing conditions and emergencies in the preserve.