Hello Alette,
How nice that you are planning a trip to the Aran Islands during your time with us!
Bed and Breakfasts typically only provide breakfast, so I'd suggest getting in touch with your host to see if they can prepare dinner for you. Maybe they also have cooking facilities or can suggest pubs or restaurants on the island if not
Inish Meain is typically quieter than the other islands but there are still restaurants available.
What else have you planned during your time in Co.Galway and beyond?
Cheers,
Antoine