[Please Help Me] Rail Passes

Hi Arno,
I am from UK and need your help to have a better and economical stay in Switzerland.
We are couple planned to visit Swiss as per below Itenaray:
2nd June : Arrive at Zurich Airport at 9:00 AM and visit Rhein Falls and night stay at Interlaken.
3rd June : Complete Titlis and Golden Express and back to Interlaken for Night Stay.
4th June : Start from Interlaken complete Shiltron and night stay at Luzern.
5th June : Start from Luzern visit Zurich and reach Zurich Airport by 7:00 PM
I need your help for below questions.
1. Any better places that I can cover on 5th june instead of Zurich city tour.
2. Which will be the better rail pass suitable for my journey and can I buy that rail pass in Zurich airport itself.
3. Will get any discounts at Titlis, Zurich and Golden Express with any of the rail pass.
Thanks in Advance for your help.
Regards
Raghunath

Good Morning Annika,
Thanks for your response.
We are a couple traveling to Swiss, so should I buy two half fare cards or I will get discount for 2 people with one half fare card???
Also please suggest on 5th June, instead of Zurich can I visit any other place???
Thanks Again for your valueable inputs..
Raghunath

Hi Raghunath. There's no saver discount for 2 or more people on Swiss Half Fare Cards. If you fill out your data in the upper right corner of the page I mentioned, including the amount of travelers, the right prices will appear automatically. I'd say a visit to Zurich on June 5 is fine, especially since you'll already be close to the airport.