It became apparent that some of the things which I was tought in school about French were either incorrect or out of date - the Belgians speak Dutch not French, and the Swiss speak four different languages, primarily German not French. In southern or eastern Europe the water from the tap may not be good enough to drink. In those countries it is advisable to drink bottled water. In northern Europe the water is of good quality, although if you have a sensitive stomach you may still prefer to drink mineral water. Generally very clean and of a familiar design, except for Germany and Italy.
Most cubicles have locks.
Essentially they are an eight inch diameter hole in the ground which is surrounded by a porcelain tray which has foot rests. Fortunately these toilets are not used in all places, and McDonalds have the conventional type. Labour costs are high in Scandinavia so items with a high labour input tend to be very expensive. Americans, Aussies and Kiwis find it very expensive. In the cities and at campsites they are the familiar design.