If you use your InterRail ticket for discounted pass benefits, you do not need to count a day of travel but you need to use this discounted pass benefit within the overall validity of your Pass. For example, with a pass 5 days within 10 days, you can use the discount within the 10 days but it is not required to use a travel day. If you use your InterRail ticket for a free extra Pass benefit, in this case, you need to use a day of travel. Please, visit this page of our website for more information :
总的来说我的理解就是打折可以不算1天但如果是免费的额外好处(除坐火车以外??)就要算一天...但我貌似在某些帖子里看还说Viking Line来回要浪费2天, 我也不明白什么意思...
If you use your InterRail ticket for discounted pass benefits, you do not need to count a day of travel but you need to use this discounted pass benefit within the overall validity of your Pass. For example, with a pass 5 days within 10 days, you can use the discount within the 10 days but it is not required to use a travel day. If you use your InterRail ticket for a free extra Pass benefit, in this case, you need to use a day of travel. Please, visit this page of our website for more information :
http://www.interrailnet.com/2_extra_pass_benefits