Boarding procedures are subject to many variables such as station, staff, time of day, etc. You may sometimes have to show your e-ticket to access the platform, and the conductor will scan it onboard the train. At other times, you can board without showing your ticket before having it checked once you are underway. It is possible to board at a station that comes after your initial departure point, and you can get off the train at an earlier station, but please note that no tickets are 'hop on, hop off' tickets.
The process for private trains is a bit different. We will send you a PDF voucher with your confirmation code, which you need to present at the operator's window at the station or office nearby. The voucher will also contain directions to the ticket pickup location.