I took many trains in Germany and there was not real reason to be nervous. It is all very user friendly and I got lucky and all my trains were on time and I was, too that worked out nicely. I had the privilege of riding first class in all of my trains but one and I can definitely say both are equally nice. In first class, there are people coming around and asking if you want something instead of you getting up to get it yourself, but everyone can always use the exercise, right?!