So right now I am in Munich with my girlfriend. We are travelling to Interlaken on June 3rd for 2 nights, then to Lucerne for 2 nights. Then we will be going to Zurich for a flight out. We're looking to travel by train and wondering if we should get the Swiss pass or not and if we should book in advance.
Right now, I can book a train journey from Munich to Interlaken for 233 Euro (~$320) for the both of us. Then we would have to book train tickets for Interlaken to Lucerne, then Lucerne to Zurich.
The other option it to book a train ticket from Munich to Zurich and then get a Swiss pass for the two of us. This would let us get on trains in Switzerland for free while we are there. The train tickets to Zurich would be 155 Euro (~$210), then the Swiss pass would be $374 for the two of us as we are both under 26.
Which would be the be the better option? Any advice would be greatly appreciated. Thanks!