Take 50€ and put it somewhere safe, your suitcase, your travel documents, wherever. This way you'll have it just in case.

Krista Article on Security - Europe

I've found from experience the best and most reliable brand of adaptors for Australian travellers is Korjo. Check out www.korjo.com

LeighF Article on Power adapters

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.

Mike Contiki Article on Optional Activities - Europe