We spend the second night on the Rhône above the Logis-Neuf lock. These pontoons are very convenient, but it is up to the mood of the lock-keeper if one can stay for the night or not, as they are built as waiting quays for pleasure boats.
But as overnight moorings on Rhône for us are hard to find, most are either reserved for commercial ships are for smaller leisure crafts, it is sometimes nearly impossible to find other spaces to tie up for the night.