We stayed for free in the large vehicle parking next to the parking garage across from the main entrance. Actually 12 years ago it was $3 a day and we stayed for over a week. More recently it was free. It is first come first served and OK for a 32ft. I don't know if a 42ft would fit but you can check it out. Only 3 or 4 spaces. Fuel, propane, and dump site was at exit 153 rt40 Haw River, Flying J.
For $25 per day with full hookups and free WIFI the State Fair Grounds, behind the horse facilities, in Raleigh suits us best when in the area.
None of the "Close By" campgrounds impressed us when we were in the need but that may have changed over the years.
Jan and Rocky
Volunteers for USFWS. 29 refuges with 9300 hrs ea since 2006. 2004 Allegro 30DA, Workhorse 8.1, Banks, 2012 Jeep Liberty Jet, Blue Ox Aladdin, Brake Buddy Advantage Select, 300 watts solar, 5 Optima group 31 AGM's, 2000watt Ames PSW inverter.