Aitch - I'm going to bed now, but will answer any questions you have.
My children loved it (dd1 only didn't go as she was already in school when we moved to Glasgow). Great facilities, fantastic staff (one of whom is actually a former pupil of mine - made me feel very old), great curriculum, real immersion in Gaelic which has stood my dcs in fantastic stead for going on to primary.
Pretty much automatic entry to the school as well, a huge benefit!
My only complaint - really, only one, and it goes for the school too - is that it can be just the tiniest bit cliquey, and exclusive against parents who don't speak gaelic, -this from the other parents, not the staff at all.
But ask away!