What companies rent and set up RV's at Hither Hills. Lost the contact info. Thanks in advance.

Google RV rentals where you live and rent one and drive/tow it down there

Unless you're staying off season reservations are needed.

And you need to make reservations 9 months in advance with reserveamerica.com

People do this individually, companies do not rent out the materials needed- you must bring your own. It's $10 to enter the hither hills property and then there's an additional fee to stay and set up camp. You can always call the information desk at hither hills and confirm the details.