I am currently trying to organise things for an Interrailing trip a friend and I are taking in the summer, and it seems that we would benefit from having some kind of international identity card.
Does anyone know what the practical differences are between an ISE card, an ISIC card and an IYTC card? Is it worth getting any of them, or more than one of them? Are there any other organisations we should be looking to become members of (we have already joined YHA)?
Please help, we are in a state of confusion.