I am asking the vet about some sort of tablet to calm her if she does need to stay in alone. I have looked on the ferry site, and although they now allow them to stay in a ventilated vehicle it is for 12 hours and as you say I am pretty certain you wont be allowed to go below decks during the voyage, and 12 hours is a long time for anyone/thing not to have a pee and to be left totally alone in strange surroundings
If you take them out they have to be in a very horrid looking cage, and Phoebe would hate that and I am sure it would be far too cold for her for 12 whole hours.
If we cant get something sorted then I just wont go, but it would be good as I have a better chance of seeing the Northern Lights and I could stay on the Islands and travel round to the various Fire Festivals the last of which is held in March sometime plus there are lots of prehistoric sites to see.
The other alternative is to go via Orkney which is a shorter journey, then take a 7+ hours trip on to Shetland later. Again its car or cage but a lesser time.
I have told you all I am a feet in first type so the deal is almost done, we are just arguing over who pays to fill it all up with fuel!!!! I would have thought they would be happy to do that to get a sale of a motorhome at this time of year, and I bet they can offset it against tax anyway.
I will let you know how I get on.
I am just off to buy a Tom Tom sat nav now.