First and foremost – You need a ticket. Said ticket should be printed on a singular A4 sheet of paper or presented on the screen of some kind of mobile electronic device with a screen with the size equal or grater then 25 x 25 mm. In addition you will also need to show the ID of the ticket owner – the person who’s name can be found on the ticket (please note that the ID must have a picture) and also a proper document that will confirm that the Passenger has the right to use a discount. That last condition will only be valid if one ore more tickets were bought with a discount. If you are not sure if you can or can not use a discount – please check the Reliefs, discounts and promotions division of our Help.