My wife works for NC State at a remote site. Occasionally she has to go to Raleigh for conference's. We always pull our fiver to Raleigh Four Oaks Resort and stay there. It is only a short commute down interstate 40 into Raleigh. We have been doing that for years and it is my only suggestion to you.
Whatever you do make sure it is this one
Raleigh Oaks RV Resort & Cottages
527 US Highway 701 South
Four Oaks NC, 27524
There is another cg nearby using a variation of that name you DO NOT want to stay at.
Ask for the premium pull through at they are at the front of the cg. It is a very nice place.