hello, we are travelling in october for 2 days to zurich then interlaken, We are family of 4 having 2 kids with date of birth 24-06-2018 and 14-10-2015, we want to get day half fare saver pass online by sbb website, my question is that do we need to add both kids as well? as I have seen that the website shows that kids are free when parents has card,but when i add kids, one of them which is reacing to 7 yeats shows payment as well…why is like that? is it not suppose to be free? or do we need to get family card but i dont see any option