We (Scott & Judy) will be on this tour next year. We're excited about seeing Switzerland in some depth to include the train rides. For those of you who also like trains, you might consider (as we plan to do) arriving early or staying after the tour since both Lausanne and Lucerne have another iconic train nearby. They are:
Lausanne - the Golden Pass Panoramic train (
http://www.goldenpass.ch/en/goldenpass/offer/view?id=14) which runs from Montreux to Zweisimmen. There is a direct connection from the Lausanne train station (10 minute walk from the Tauck hotel) to this trip. Leave Lausanne at 9:17 AM and return at 2:43 PM (2018 schedule...will need to confirm next year).
Lucerne - the Mt. Pilatus Cog Railway (
https://www.pilatus.ch/en/discover/cogwheel-railway/), the steepest cog railway in the world, is a short tram ride from Lucerne station (10 minute walk from the Tauck hotel) and offers many round trips to the summit of Mt. Pilatus daily.