Last Updated: 7th Jun 2012
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.
Take 50€ and put it somewhere safe, your suitcase, your travel documents, wherever. This way you'll have it just in case.
My advice would be to do as many excursions as you can. They are a great way to get to know your group, and they are always good fun.