Can I bring my children for free?
Yes, children aged 0-11 travel for free on the ferries. They have to be accompanied by an adult with a valid Interrail Greek Islands Pass at all times.
Children under 4 don't need a pass when they're not occupying a bed, berth or air seat. Children aged 4-11 need a Child pass - you can get 2 free Child passes with every Adult Pass. On the Interrail Greek Islands Pass page, check out prices under the tab that says 'Family'.
Travellers aged 12 to 27 on the first day of travel can get the Interrail Greek Islands Youth Pass.