Look up what's happening in each city before you fix your dates, since a festival or concert might be worth reshuffling your itinerary for, and big events can mean street closures. Munich during Oktoberfest (late September to early October) is the classic example: hotel prices climb sharply, and trains such as
Berlin to Munich fill up early. From late November, Christmas markets make routes like
Prague to Vienna sell out faster than usual. On Christmas, Easter and national holidays, many countries run reduced timetables, and some shops and attractions close. If your train is affected, contact
Rail Ninja customer support for help with your booking.