I am traveling from Venice to Zermatt on the 29th staying in Zermatt the night of the 29th and then traveling on by train (2 1/2 hours) to Interlaken early on the 30th June hoping to go up to the Jungfraujoch on the 30th of course weather permitting. Here is what I am hoping someone can help me with.
1. What time is the last train going up to Jungfraujoch? Time for the last train down?
2. If the weather is good should I stay in Interlaken or Lauterbrunnen?
3. Do you see any problems with my plan? My wife and I have tried this once staying in Grindelwald and got half way up the mountain and the train stopped and went back down because of weather. If the weather is bad at the top on the morning we wake up in Zermatt then our plan is to just continue on into France by train making it up as we go.
Thank you for any advice offered