I will be spending 4 days (3 nights) around Colmar in May and am unsure as to where to start. As a sommelier I have a good knowledge of which wineries I would like to visit, but am a little confused as to how the transport system works in the area. Unfortunately I will be travelling solo, and would rather not drive. Is it possible to walk around the region? Or even walk one way and taxi back with minimal effort? My French is of a good standard and I would be happy to make use of buses if they exist. All I can find right noware local Colmar buses. I'm hoping to visit Riquewihr, Kayserberg, Turckheim and Eguisheim in particular based on the wineries (primarily!) and the monuments there. Any tips/hints are welcome, I have the big names down, some smaller wineries and some co-ops, but any personal recommendations would be super. Also, I've seen the restaurant perspective in the French dining thread - any good wine bars?