Yeah its no harm to drop Geoff a line to let him know you're staying over and it sure beats me doing it for you. However I don't anticipate a problem - there's plenty of bunks at the accomodation.
It shouldn't be a problem to drive from Culdaff back to Geoffs place to get fills. Its a distance of 10km according to the AA route planner. Alternatively bring extra prefilled cyls and sunbathe during the surface interval
