High cliffs that much of the year takes a good beating from the seas surround most of the island. On a good calm day, you can take a dinghy into one of the many caves that the sea has dug out of the cliffs. I was lucky to have good weather and experience this.
Best baggage handling I have ever seen. You just set your bags out on the road and the ferry crew picks them up on the way to the ferry. The little lambs guard it from who knows what; it was a pretty funny picture.
You can join a Thistle Work Camp through National Trust for Scotland or join an IVS (International Volunteer Service) Work Group and work on numerous projects on Fair Isle. The work camps stay at the Puffin (a.k.a. Puff Inn). The work is varied and always involves members of the community. From the stories I heard, it sounds like a work hard play hard type of affair.
Fair Isle belongs to Shetland, and lies halfway between Orkney and Shetland. There live about 70 people on this little Island