Better to book a ticket in this train in advance. If, you are planning to buy a ticket from ONR station then, you have to wait in a queue of some 50-60 odd passengers. The counter at ONR opens at 3:30 PM. Ticketless travellers are not allowed in the platform premises after 3:50 PM. RPFs will order you to leave the platform if you have no ticket for this train after 3:50 PM.