Ahammer I have the same question as you. I am buying a TGV Lyria Paris-Zurich direct ticket. It clearly shows the option to selection Swiss Half Card, but for my child, it doesn’t show a Swiss Family Card or equivalent option. The fare shows a 15% discount when I add the Swiss Half Fare Card for the adults. What discount should be chosen for the child who has a Swiss Family Card?
I am attaching the reference screenshots.