Florida rest area info;
Each facility is protected by security personnel during evening and nighttime hours. Most of the rest areas provide family restrooms for travelers who may need companion assistance to make use of the facilities. The facilities in our Welcome Centers and Interstate Rest Areas are open and maintained 24 hours a day, 7 days a week for your comfort and convenience. The State of Florida's Welcome Centers, Rest Areas and Turnpike Service Plazas are generally equipped with public pay phones for use by travelers; facilities that do not offer pay phone services are equipped with call boxes to be used in case of emergency.
Overnight camping is not permitted, but visitors may stay for up to three hours.http://www.dot.state.fl.us/statemaintenanceoffice/restareainfo.shtm