After totally crashing last night, I slept in bits and pieces, waking several times, just feeling like the hotel room was too warm. Once my brain was sort of alert, I figured I should probably look at booking trains to get me to Frankfurt flughafen, now I had an idea of times. I still don’t totally understand the DB online booking system, from what I could tell, I could pick the train with the lowest fare, then in the booking options make it a flexible ticket possibly for any train today, and only pay a few euro more, so I could get a 40 euro ticket, and for an extra…