Im in Bedford and have no problem with an Orkneys trip, in fact the wife's always wanted to go. Simple enough to do Bedford - The Kelpies-Thurso so 2 nights and then the orkneys.
Looking at Rousay on search for sites I see theres nothing there so that's good for you as you'd be the only one. For us I'd be happy with hardstanding, drinking water and black waste. I don't see you needing shower blocks etc, as others have said keep it simple. I'd happily come to the orkneys for a week in December if we had the time off, long nights? who cares? TV, board games, skywatching stars or hopefully aurora. I could easily imagine one if not two nights on rousay.
Looking at Rousay on search for sites I see theres nothing there so that's good for you as you'd be the only one. For us I'd be happy with hardstanding, drinking water and black waste. I don't see you needing shower blocks etc, as others have said keep it simple. I'd happily come to the orkneys for a week in December if we had the time off, long nights? who cares? TV, board games, skywatching stars or hopefully aurora. I could easily imagine one if not two nights on rousay.