In reply to anonymous123:
The fort is quite a good place for parking up discretely, as ciro says provided you're moving around and stopping in different places you shouldn't have many issues. The more discrete your van is the better.
People sometimes get moved on in Glen Nevis during the summer but I've stayed there in winter without any problems and I guess most of the academic year will be outside the summer months anyway. There's a forestry car park on the right just before the mountain path car park which is a bit more secluded. Had a ranger turn up early morning there once, presumably to move us on but we were in bivvy bags and after a brief conversation on what defined camping he let us be. I wonder if the noisy owl is still there.
There's always the NFC at torlundy but it's a bit of a walk from town. I imagine your main problem will be getting home after a drink, you don't really want to have to walk back miles but you don't really want to be parking up in town with your keys in your pockets either.