Day 1 - Arrive at Basel. Do some sightseeing around Basel (3-4 hours) before getting on the train to Wengen. I am not sure what can I squeeze in for a 3 hour trip. I was thinking of just walking around the town.
I have a question here. If the visibility is not good on that day, does it mean that it will be the same at Schilthorn too?
Day 4 - Wengen to Zurich Airport.