Airspaces in Switzerland are a tough subject, get all the info you can get before flying: http://www.flyland.ch.
DABS (active danger areas etc): https://www.skybriefing.com/portal/
Access
by car or hike from amden:
-no parking in turnpad;
- weekends. no parking at launch;
- sunday/ public holidays: road closed to cars: 1300-1700;Am Wochenende dürfen keine Autos am Startplatz parkiert werden.