>> My husband and I would like to go on the GPL from Montreux to Lucern using our STP as a discount.
On the Golden Pass route, you get free travel, not a discount, with your Swiss Travel Pass.
>> We want to make reservations as we really want to sit in First Class.
Reservations are optional in both 1st and 2nd class, but recommended for the sector from Montreux to Zweisimmen, which is the sector on which trains have panoramic windows.
You do need a 1st class ticket or pass to sit in 1st class. If you have a 2nd class Swiss Travel Pass, you can buy a class upgrade at any staffed station in Switzerland. You can upgrade just for the Montreux-Zweisimmen sector, or for the whole trip.
>> My question is...When I go to the "Golden Pass" website and apply Montreux as my starting point and Lucern as the ending point, all these different Rail Stations come up with different starting points and times.
That is because there are several sectors between Montreux and Luzern, where you must change trains. If you want reserved seats all the way, you need a separate reservation for each sector. But as I mentioned above, reservations are not compulsory.
The sectors are:
1. Montreux to Zweisimmen (change trains). Reservations are recommended for this sector.
2. Zweisimmen to Interlaken Ost (change trains)
3. Interlaken Ost to Luzern
Sometimes you also need to change trains at Spiez, which is between Zweisimmen and Interlaken Ost.
>> I am very confused. I also do not see where to add our STP for the discount.
Reservations cost CHF 8 for normal seats in 1st or 2nd class, or CHF 15 for VIP seats. VIP seats are only in 1st class and on some trains (not all trains) between Montreux and Zweisimmen. Reservation fees are not discounted.
>> upgrade to 1st class is a fee??
Yes, with a 2nd class Swiss Travel Pass you will pay half the difference between a 1st class fare and a 2nd class fare for any sector for which you purchase a class upgrade. As I mentioned above, you can buy a class upgrade for one sector or for the whole trip at any staffed station in Switzerland.
I hope you are less confused now!