We are family of 5 travelling basel to zermatt then back a week later. i have bought 3 saver day passes for the 2 adults and 16 yr old. for the 2 under 16 it works out a bit cheaper to buy junior card ( cant find price for co junior card). but i need to buy at the station. so do i just go to station kiosk in morning and buy ? or should i just pay a bit extra and get them the day pass for 19chf each way ?