My only experience is as a passenger, flying with them NCL-Zante and back last month.
Quite simply the best in-cabin service I have ever received from an airline (after flying BA, AA, KLM etc...).
Crew were either Irish or Icelandic and couldn't do enough for me or my 5 month old daughter (making sure she had blankets, helped fit the special lapbelt, held my meal back whilst I looked after her).
Very impressed!
If you think I may hold other info let me know.
Web address (albeit failry basic info):
http://www.islandsflug.is/islandsflug/english/
As an edit: I was talking to one of the Icelandic cabin crew and she only works weekends as her husband can then look after the children. Flexible working at its best.