要预定8月初，
瑞士sargans-
维也纳的夜火车票4张，2等座位。票价29欧1张。 有如下疑问
1） 三个选项 1)no reservation，2)reservation，3)complimentary reservation
在"Who qualifies for a free seat reservation?" 里有说明
The reservation of a seat by travellers is free in the following cases:
they hold a blue VORTEILScard
they hold an ÖSTERREICHcard
they hold a VORTEILScard Spezial for people with disabilities and blindness
In combination with a valid ticket for autotransport on the same train
In combination with a valid ticket for transporting a bicycle on the same train
In 1st class business, a seat reservation is only free for holders of an ÖSTERREICHcard 1.Klasse.
For international tickets seat reservations are only free for the sections of the journey that commence in Austria, as per the conditions listed above.
a) 这段话表示我不满足上述条件，定位就要加钱？一般加多少预订费啊？
b) reservation 和 complimentary reservation 有什么区别啊
c) 如果我选择no reservation, 那么4个人，在8月初 旅游旺季的时候，有4人一起的位子么？还是要分开找的啊？
2）Saloon coatch 和 compartment coatch 的区别
后者应该就是包厢位吧？ 那价格是不是也会不一样？没输入信用卡号，我仍旧看到的是29欧一个人的价格哎。
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