You'll find a lot of trip reports in the TC section of the forum. TCers, by nature or what, generally seem to prefer the natural ambiance of government campgrounds and boondocking over the frills of some commercial parks. Must be something in our water. Anyway, you can view a trip report with photos of the OBX
here, compliments of kohldad.
I use
U.S. Campgrounds/info and
RV Park Reviews to locate campgrounds and parks. They generally will lead me to a park's webpage that often contains some photos, albeit good or bad. From there, I can use Google Earth to refine my overall view of the campground/park's surrounding area, sometimes at the street level.