How will this work on your unmanned routes? i.e., Sound of Barra, Sound of Harris? 

If you do not have a confirmed reservation, all booked traffic will be loaded, followed by standby traffic (other than motorhomes/campervans/caravans).  

After all other standby traffic is loaded, should space permit motorhomes / campervans / caravans will be loaded. 

This will be managed on a sailing-by-sailing basis.