Clothing/Shoes/Weather Gear: Don't forget to take plenty of layers of clothes that you can add as you go up the Gletscher Bus levels. It may be hot some summer days at the bottom but could still be below freezing at the top. You don'y want to freeze at the top or melt at the bottom now do you? Also make sure you have good sturdy walking boots on to make the most of the paths at the bottom and Sommerburg levels.
Take some sensible shoes because you will be walking in snow if you go to the top!
Photo Equipment: Dont forget the camera