Hi there! We're booked on the 8/16 Viking River Cruise from Amsterdam to Vienna. If you have a moment to share your trip impressions with us, we would be forever grateful. Especially interested in how warm it was & dress. They state in their travel tips - "No shorts allowed in dining room." We called & asked whether that meant walking shorts & Bermuda shorts & they said Yes! Can't believe that. Thanks for any help you can provide & hope you had a wonderful trip. Lisa S.