Spottttt - My (and several others') understanding is that the end 'shower' is allowed to run continuosly so that the water in the pipe doesn't get scaldingly hot. Maybe not a strong arguement at the moment but makes sense in the height of summer.
Both showers have worked in the same way during our stay and we enjoyed it every day.
Personally, I do not like the end "shower" because there are so much bees and I am allergic against a bite of bees.
Therefore I avoid to go to this shower.