It sounds like Jack and Ianto have earned a holiday. What a perfect place to relax after working for so long. I suppose they would miss seeing the sun and the water when they're on their ship so much.
Author's Response: Being out in the fresh air for a few months will do them good. I'm sure they have daylight lamps aboard, and maybe vitamin D supplements, but nothing beats real sunlight. They'll enjoy the break. Thank you!