30,000 Character limit per answer. This is the end of my large answer
Park: Everglades State: Florida Region: Southeast
Links: National Park Service, NPS camping, Wikipedia, Weather
RV Camping in the Park: Flamingo campground, T loop has 41 sites with electircal hookups.
Reserve: http://www.recreation.gov/fl/flamingo/campground/r/campgroundDetails.do?contractCode=NRSO&parkId=70976
Primitive Camping Options: Hike, Drive, Boat; Some reservable
Park: Biscayne State: Florida Region: Southeast
Links: National Park Service, NPS camping, Wikipedia, Weather
RV Camping in the Park: There are no facilities for RV camping, and tent camping requires a boat to get to the park's islands.
Reserve: Pelican Cay Harbor Marina (commercial) seems closest 305-345-4830
Primitive Camping Options: Boat; non-reservable
Park: Hot Springs State: Arkansas Region: Midwest
Links: National Park Service, NPS camping, Wikipedia, Weather
RV Camping in the Park: Gulpha Gorge Campground, All sites have full hookups: 30 and 50 amp electric, water and sewer connections. Sites are available on a first come, first served basis. You cannot make a reservation.
Reserve: State parks and commercial options, To many variables to suggest a defualt
Primitive Camping Options: None, Full only
Park: Big Bend State: Texas Region: Intermountain
Links: National Park Service, NPS camping, Wikipedia, Weather
RV Camping in the Park: Rio Grande Village RV Campground (concession)
Reserve: call 1-877-386-4383, or 432-477-2293
Primitive Camping Options: Hike, Boat, Drive, Horse; Some reservable