Natasha, we went from Brindisi to Patrs in 2000 and things might have changed since then. We took the ferry using our passes, be careful as there are ripoff artists at the train station with "official agent" signs for the ferry. They sold us tickets with an overnight cabin at twice the regular rate. The trip over was fabulous, overnight trip btw. Food on the Greek ferries was a lot worse than on BCFerries, we bought olives, bread, meat and wine in town and had a picnic on the top deck under a full moon. That was better than in the smoky lounge. In Patras, we'd missed the first train, the second train was fully booked, the third was an old slow train ,we opted to take the bus, much faster. Athens bus station was out of town a bit, had to transfer to a local bus, all cheap at the time. BTW , we were 49 and 50 at the time and we had a ball