Hello.
We will be traveling to Switzerland next week(July10th) as a family of four with two kids under 5 years. I am looking at reserving seat guarantees to popular attractions such as Brienz Rothorn train. Do i need to purchase seat guarantees for my two children ? I am aware kids under 6 years travel for free essentially everywhere in Switzerland so I wasn't sure about guaranteed seats. For context, one of our kids is very young so they can sit on our lap and the other will need their own seat.