I have not been to Oitavos Dunes and it is not really on my list of courses I'm intrigued to visit. (Portugal the country, I'd love to visit; Portugese courses, not so much, though there was a course recommended here last year that I'd never heard of, and none of my co-authors have seen.). As for Oitavos, I may content myself with letting Masa and Darius report on it, unless something else takes me to Portugal in the next couple of years.