NC500, although locals en route need our business, weather & hotel costs in high season put a stop on it, & wardens chase you if wild camping, even in vehicles, must be on a campsite - which are not near towns.
We can use Over 60's Concession Passes for free travel on any bus/coach (except tours/trams & city sightseeing) throughout Scotland, inc on cross border services as far as the border, also reduced travel by train to/from nearest cities, .& further must be paid. Those with disabled +1 passes can take a carer free.