Just returned from this tour, on which we ( couple) were the only guests- as promised, the tour went on, just for us. Very personalized, attentive service; drivers and guides were all knowledgeable & pleasant. Hotels were all fine, especially the one in St Moritz.. Itinerary changed a bit, added Rhine Falls, due to ticketing issues on train. Both we and the tour operator were flexible and we got all that we expected. Some communication problems caused short-term annoyance but everything worked out . Would recommend this tour for any first-time visitor to Switzerland!