I'm an outerbanks native...
The islands have changed alot in the last 20 years, but if you want to "get away" there simply is no better place. Hatteras Island is a national park from the Oregon Inlet bridge south, with over 70 miles of shoreline. Part of that park is the Pea Island National Wildlife refuge, which is one of the "Charles Kuralt trails"...a must see if you're in the area. It's where the migratory birds nest in the spring and layover in the fall. Absolutely beautiful.
It truely is a beautiful place. There are many learning expreriences and activities to do there. My Great Great grandfather was a lightkeeper on the island. Your friend may have come across a bit harsh, but it really is a wonderful place to visit...until the realtors find a way to develop it all that is...
The northern end (Nags Head, etc) is fairly developed, but if you go south on highway 12 on Hatteras Island you will see sights that I guarantee you have only read about. Unfortunately, the island is so narrow that a good NE breeze will make the only road in or out unpassable to passenger cars. The ocean will litterally blow over to the sound with a good NE wind.
Those are just the "natural" things to see. Lets not forget that the Wright Brothers chose Kitty Hawk / Kill Devil Hills as the site that they would eventually make the first powered flight from.
That said, my kids are going to WDW this summer. We see the 'banks' all the time