My husband and I will be traveling with Evergreen tours on a River Crusine down the Danube, Main and Rhine during the month of June. I was wondering if anyone else has been on this trip and how they found it? As we have never been to Europe before we would like to know how warm/cold the weather will be? ie do we take heavy coats or light weight jackets. Also, does every country trade in euro or do we need different currencies? Thanks for all your help.