I booked interrail tickets for my group of friends through Myinterrail.com. However I mistakenly entered someone's name wrong. I thought he was an 'Alexander', whereas in reality he is just 'Alex'. All the other details such as passport numbers are correct.

I have contacted MyInterrail and their advice was to change the ticket. However this is a lengthy and expensive process.

Does anyone have any experience with this or know how thoroughly the passes are checked?

Is changing the name something that needs doing, or should we be able to get away with it?