Feb 8, 2015 - 9:42 AM
Which offer are you referring to? If you post the page (URL) I can have a look. Do you mean the Supersaver tickets perhaps, which are explained here? Be sure to check the special conditions. Such tickets are only available for particular routes (I have never seen them for the Glacier Express route), and particular trains. I you miss that train your ticket is not valid for other trains. You're not flexible with such tickets, so for most people it's not the best choice. If you're very sure about a particular train and if you don't have a rail pass, you can save money though. Without a pass, I think the maximum savings are 40%.
1. No, that's an exception as explained above.
2. If you always want 50% off the ticket prices, you'd better buy a Swiss Half Fare Card. Then you can get reduced tickets all the time, for all routes.
3. There are e-tickets available, but regular tickets (e.g. with a Swiss Half Fare Card) don't need to be booked in advance. You can get them at the station. Only seat reservations need to be purchased in advance. Only a few trains require them, such as the Glacier Express.
I hope this makes sense!