In reply to colin8ll:
Via Ferrata is definitely worth doing in my opinion - I have done it a couple of times and really enjoyed. It takes about 2 hours and you can get the lift back down.
There is a campsite near the other lift in town. Havent stayed there so cant say if its good or bad. Not sure if wild camping is feasible below Ueschenen as I cant remember any partilularly flat bits below the crag.the routes are good though - would recommend Grauwand