There are places to eat in town, and on some evenings they are all shut. Tell reception the night before and Rugiyya will cook for however many of you there are: rihaakuru and rice, garudhiya, fish cooked the way it is cooked on this island rather than the way it is cooked for visitors.
Priced per head and put on the bill. Say if you cannot eat something and it will be cooked around, rather than served to you with the problem picked out.