My almost 17 year old daughter will be traveling with a friend to visit friends in Germany. The friend lives near Stuttgard, but I have found that airport to be hard to get to, so I was going to get them tickets at Frankfurt or Munich and have them ride the train to Stuttgard. Is this a reasonable thing for 2 fairly bright teenagers to do? Is it easy to get on the train and get to their destination? They know some German, but it’s limited. I have found many German people speak excellent English and are very helpful.