If you are worried about pick pocketers go to www.pacsafe.com they have slash proof bags and purses as well as camera straps. Great for guys and gals. I used the citysafe 200 and its great.
Make sure you try currywurst in Germany. It's basically a hot dog with tomato sauce (ketchup) and curry powder. Tastes brilliant and only costs 1 or 2 Euro.