Ros na Rún actresses Máire Eilis Ní Fhlatharta and Fionnuala Ní Fhlatharta have been with the soap since it began 20 years ago, and while on the show they may be classed as frenemies, in real life the pair are firm friends. Máire Eilis plays Caitríona Ní Loideáin ,who owns the beauty salon in Ros na Rún, while Fionnuala plays Berni Ní Neachtain, who owns the local café.