Barns?
Yes, they use barns, but, for their personal stuff. Also, there's one for the men and another one for the women, the wife can't enter the barn of his husband, and the husband can't enter the barn of her wife; they respect the Personal stuff of the other.
Knowledge
Even if you don't believe it, this culture have knowledge about Astronomy. They have seen the Constellation: Canis Maior, and followed one star, in this constellation, that is important to them because of their Gods, they call it: "Sirius B".