As part of our Europe trip in May 2012, we will be in Switzerland for 5 nights. 2 in Lucerne and 3 in Interlaken. 1 day we wud spend in Lucerne moving around and the other day we would go to Mt. Titlis.
Then, in interlaken, 1 day we would do adventure sports, 1 day for jungfrau and we hav 1 day remaining. We were planning to go to Montreux to see the the Chillon castle as a castle is not part of our itinerary. Request feedback and suggestions on this, We are a young couple.