is it necessary for me to get any pass? Thank you. :)
Thanks for your first post here! Yes, you do need a pass to save money. The Swiss Travel Pass is the most convenient option as almost all transportation is covered. You only need to buy discounted tickets for the two mountain trips. But I expect the Swiss Half Fare Card to be the cheapest option in your case. It allows you to buy 50% discounted tickets for all of your trips. Please see the links for pass details, and this guide if you want to compare your travel expenses with these passes in detail.
I'm not sure how many people will be traveling, but you can get a discount if you spend at least € 250 and buy before August 26. Please see www.raileurope-world.com/deals/great-deals-to-tour-Europe. If you don't meet that requirement you will save money anyway as the passes are cheaper online than in Switzerland. Please see www.raileurope.com.sg/ pass/swiss-pass and www.raileurope-world.com/ pass/swiss-half-fare-card for prices.
Thanks Arno for the valuable information. May I know whether Schilthorn is entitled for the 50% reduction under the Swiss Half fare pass? Thank you again.
Yes it is, please see the Swiss Half Fare Card page I linked to and click "Where it's valid". If you have further questions, just let me know!