hmm. I've met Kermit (it is Kermit, right, Mickle?), and unless he's been done up a lot, I'd say 'motorhome' was perhaps a little grand as a description!
Mind you, the woodburning stove is news...
We got thrown off a caravan park once, for being bright green. Caravans can only be beige, y'know...
Naburn might be a good bet, you can get into the Designer Outlet the back way from the Naburn Road, avoiding the double roundabout on the A19. In fact, even coming from Fulford, it might be nicer to detour up Naburn Lane, over the flyover and in the back way, than do that roundabout... Not sure if there is accommodation in Naburn though - I can't remember noticing anything as I ride through.