Apr 12, 2012 - 4:07 AM
Yes, you can buy your train tickets (half fare) online, before you actually have a Swiss Half Fare Card. You can order the Half Fare Card online at the same time here
. (Personally I prefer to get my Passes this way.)
But if you prefer to buy this Card at the railway station of Zürich Airport, that's possible too during opening hours of the ticket counter from 06:15 to 22:00.
Your train tickets are no seat reservations. These reservations are only possible (and necessary) for special panoramic trains, like the Golden Pass Line, the Bernina Express, the Glacier Express, etc. and international trains
Enjoy your stay!