here is a fountain and recreation area. Don't have the geometric details, nor know how to best call / tag it.

here is a kneipp area. don't exactly know how to handle / insert it. please help

Hier ist mittlerwereile der Motorikpark Köflach. Sollte daher aktualisiert werden.

There are a couple of ways, skiing tracks, snowmobile tracks and others in this area. E.g. shown by https://minkarta.lantmateriet.se/. However, I am not proficient enough to digitze them properly. Maybe someone can help

It looks like drinking_water with all the equipment still there, but has been dry for ages.
What would be the best approach? Completely delete? Only delete the "amenity = drinking_water" statement? Or leave the statement and set sth like "water=no"?

There is a public playground at this spot which is shown in the OSM data.