On next Friday I will travel from Basel to Interlaken by train. I want to stop by Bern in the evening for a little walk and food. I don't want to spend too much time there since I don't want to arrive too late. Is that ok?
Also regarding to transportation, I want to know if I just buy a train ticket from Basel to Interlaken, do I need to reserve separately on both Basel-Bern and Bern-Interlaken? Is that usually crowded?