Hello,
Me and a friend have 2nd class passes and are on our way to hamburg. From hamburg we are supposed to catch another train to mannheim. However, when I checked this morning the bahn website stated that they expect high demand in second class. Since the rail planner app did not recommend / require seat reservations we did not make any for the train to Mannheim. Does anyone have experience with this route and can explain what our chances of getting on that train are?