The package does not include the train Zurich to Kandersteg or the Oeschinen gondola, so you can book your own with your Half-Fare Card and benefit from the ~50% Halbtax discount. Tip: buy your train and gondola together as an SBB RailAway combo on the SBB app for around 10% off.

Saturday lunch at Berghotel Oeschinensee (self-service on the terrace) and Saturday dinner at Alpenblick Kandersteg are also at your own expense, giving you the freedom to order what you fancy. The optional alpine coaster down to the valley is also pay-on-the-day if you want it. You can find an estimate of the extra daily costs below.

Switzerland is on the higher end for travel costs, but with a Half-Fare Card the train and cable car are very reasonable. Here's an estimate of common extras:

Train Zurich to Kandersteg return (with Halbtax): ~CHF 70

Oeschinen gondola return (with Halbtax): ~CHF 22

Saturday self-service lunch at Berghotel Oeschinensee: CHF 25-30

Saturday dinner at Alpenblick Kandersteg: CHF 40-50

Optional alpine coaster ride: ~CHF 10

Local beer (0.5L) at the hotel: CHF 6-8

Coffee in the village: CHF 4-5