关于意大利Sabato Italiano类型的火车票

今天上意铁网买票，意外发现出了一种叫做Sabato Italiano的票，半价，比那趟车的mini还便宜，然后看了下他的规则，说是周末的一个优惠，具体如下：


SABATO ITALIANO If you are planning to travel between 2/04/2011 and 27/08/2011 you can avail of the great offer “Sabato Italiano”, which allows you to travel on Saturdays with a one-way ticket valid for two people, at the full base price for one person, both in 1st and 2nd class, on all national trains and on international trains, only for stretches of line inside Italy.

Couchette and sleeping carriage services, Excelsior and Excelsior E4 are not included in the offer. You can book this offer up until the day before departure, at ticket desks at train stations, authorised travel agencies, self-service ticket machines, on this website or through our Call Centre (non-toll free number). The number of seats available is limited and varies according to the train and class booked. The offer cannot be cumulated with other reductions and offers, including children reduction.

No tickets are issued without seat guarantee and no seats can be booked in the lounges through this offer.


Booking change

Not allowed


Ticket change

Not allowed


Refund

Not allowed


Access to other trains

Not allowed.


If you use your ticket on a day or train other than the ones booked, you will be deemed to be travelling without a valid ticket.


但当我想要购买时，选位子那一栏不管我选哪个，旁边始终显示“No seats availability for the selected fare/service”。我尝试了其他种fare，都能够选择，我又尝试了其他的日期和火车班次，发现只要是Sabato Italiano的，全都无法选择位子，又不让提交。请问各位达人有没有碰到过这样的情况？