Thanks, ewizabeff. Prior preparation is key to being able to hit the ground running, and maximize your time when it's limited! And our preparation for today actually goes back almost 3 years, to the canceled June 2013 Danube cruise. I had looked up the boat dock locations at that time and was prepared, but I refreshed my memory prior to leaving for this trip. And we'd had some experience with the Vienna U-Bahn on the land trip as well. But there's nothing too out of the ordinary about this metro