interrail的有关问题 【船票以及7点原则的详细内容

1.因为和友人想从意大利Ancona坐船去Igoumenitsa，但是不知道船票的费用使用interrail是不是免费的。看官网感觉说的很含糊……貌似是免费的貌似只是打折




Set sail for Italy with Superfast FerriesInterRail Global pass holders can travel on the routes: Patras – Ancona (Italy) (Operated by Anek Superfast)Patras – Bari (Italy)Igoumenitsa – Ancona (Italy)Igoumenitsa – Bari (Italy)Corfu – Bari (Italy) (sailings during summer period only) 1st class: Free airline-type seats or dormitory*.2nd class: Free economy seating. InterRail pass holders with a One Country pass valid in Italy or Greece get a 30% discount on these routes. * Dormitories are not available on ferries that operate on the routes: Patras (Greece) – Igoumenitsa / Corfu (Greece) – Bari (Italy)Bari (Italy) – Igoumenitsa / Corfu (Greece) – Patras (Greece)
2. 关于interrail的7点原则还不是很懂。如果我买6点多的火车，7点多在某地转车了之后早上到达目的地，这样难道算成2天吗？= =感觉略不科学。。
求懂的小伙伴和大伙伴支招，好人一生平安么么哒。