Wife and I are looking for a significant vacation this year. We are interested in the river cruises in Europe. Last year we went to Italy with another couple for 10 days - not a river cruise. This year we are on our own as other couple is staying close to new grandchild. Open to any of the river cruises - any river, any vendor. Thinking 10 to 15 days. I am a Delta Diamond so we can you points for flights out of Atlanta - do not need package air deals. We think we like the river cruise concept but have not done a river cruise. Looking for feedback and suggestions. Thanks in advance. We are rehearsing for my retirement from civilian career!