Apparently they were harnessed in the whole night onto a rope. Amanda said she had a she wee and if they wanted to they could go down the ladder to a proper toilet. She said she had her period that night too.
The second half of this season dragged and the alliance stuff was stupid but even in spite of how much of a mess this season was it's still my second favorite TAR Australia season? That's more of an indictment of the other seasons (especially 3 and 4) but still.