Hi, I need to book a train ticket from Zurich airport to Lucerne, and then from Lucerne to Interlaken the next day, and then from Interlaken back to Zurich airport 3 days later. In a previous thread someone mentioned the super saver ticket would be better than buying a pass - however I have tried to book tickets online and only the airport to Zurich HB allows me to reserve seats, the longer journeys do not. Can anyone advise if it is necessary to reserve a seat or if we will be fine with finding seats? And if I don’t book tickets online and buy them at the airport, am I risking not getting tickets? We are 2 adults and a 6 year old and travelling from 19th to 23rd Sept. Thanks