Q: Where can I collect my tickets?
A: You can collect your tickets at any of major railway stations, including: Colombo fort, Gampaha, Kandy, Peradeniya, Nawalapitiya,Nanuoya, Ella, Badulla, Haputale, Bandarawela, Hatton, Galle, Wallawatte, Kalutara, Aluthgama, Polgahawela, Hikkaduwa, Matara, Jaffna, Anuradhapura, Vauniya, Trincolamee, Galoya, Polonnaruwa,Valachchenai, Baticoalo, Anuradhapura, Kurunegala,
Q: Can I collect my tickets at the airport?
A: Sorry, tickets can only be collected at the any above mentioned stations. and if you used any third party printing point (Mobitel) you will be more likely to encounter problems and might loose your ticket completely and SLR will not reprint your tickets.
Källa:
https://www.visitsrilankatours.co.uk/faq.html