There are only two ways off the island: airplane and ferry. This ferry, to Fukuoka, takes two-and-a-half hours. It costs 4000-5000 yen (about $50) for a roundtrip ticket. In the winter, there are only four ferries a day, and one is at midnight.
All together, this means that it takes a lot of effort to get on and off the island. Unless, that is, you want to pay more like 12,600 yen (?) to take the plane.
All the ALTs are coming back to Iki! I’m not alone anymore. Yaaaaay!