Thank you for your swift response.
- I have search for the connection I wanted (March 22 Geneve Airport -> Zermatt)
- I then completed the Passenger details. At the Discount cards drop down list, I have chosen 'No discount'. I have not chosen Half Fare Travelcard, as I don't have one.
- During the next step, Saver Day Pass was preselected from the system. Other available choices were Point-to-point Ticket and Supersaver Ticket.
In the Saver Day pass terms and conditions it is mentioned that Saver Day Passes 'are available with or without a Half Fare travelcard'.
Upon purchase of the ticket I have received the same in my email indicating: 'The Saver Day Pass is valid for travel on GA Travelcard area routes in the relevant class.'
So, the question still stands. Will I need to have a GA Travelcard to use the ticket?
This topic here is also relevant, where somebody else actually had the same question without receiving a clear answer though.