Hi looking for a little advice. My husband and I are going to a reunion mid may on the German-Dutch border. We have 4 days to spare and would like to travel down by car to the Rhine towards Cochem or Koblenz . We leave the little town of Goch on Sunday. Will we have time to see cologne or give it a miss and just saunter down the Rhine and have the Sunday,Monday & Tuesday. We need to travel back on the Wednesday morning to catch the late ferry back to the u.k. Is it doable. Any tips or suggestions gratefully received.