You can purchase the Achensee Holiday Card at reception. It is valid for seven consecutive days and includes unlimited use of the cable cars (Rofan cable car & Karwendel cable car), free travel on the Achensee ships and Achenseebahn, and free admission to various museums (Notburga Museum, Achensee Adventure and Museum World, Sixenhof Local History Museum, Tiroler Steinöl Vitalberg, Swarovski Crystal Worlds).
Further information at the reception.