We had a couple of trips out of Interlaken planned for the time we were there, but the first order of business was a Swiss SIM card. Having done the appropriate research ahead of time I headed into town to find a friendly Swisscom store. Another tourist was trying to purchase a SIM but had not brought the requisite paperwork, his passport. It is easy to get a prepaid SIM in Switzerland, they have a handy form for it, but you do need a passport and a local address – your hotel.
The drive from Luxembourg to Interlaken in Switzerland is a bit over 5 hours driving time, depending on route. We decided to stop in Schengen on the way.