Addendum that I forgot to mention yesterday...

I forgot to mention the amazing feat I performed yesterday - after hopping on the train from Berlin to Prague, I then realised that my special Prague ticket needed a stamp to validate it, which I could only get from a station ticket office (not the conductor). Once the train got to Dresden, I jumped off, fully laden with my pack and my backpack, and dashed madly to the ticket office, waited behind 5 people in the queue before getting the ticket stamped, and once again running fully laden back to the train, which pulled out 30 seconds after I got on board. Running with a 10kg pack on your back and another small pack on your front is no mean feat! Go me!