The selection of available additional season tickets depends on which NS season ticket you have. Below is a list of additional season tickets for each NS season ticket:
Weekend Vrij: an extra Weekend Vrij season ticket for a maximum of 1 family member.
Dal Vrij: an extra Weekend Vrij or Dal Vrij season ticket for a maximum of 1 family member.
Altijd Vrij or OV Vrij: an extra Altijd Vrij, Weekend Vrij or Dal Vrij season ticket for a maximum of 4 family members, or a maximum of 3 free Kids Vrij season tickets for the 4 additional season tickets.
确认了已经只能添加一个member了。只有Altijd Vrij or OV Vrij可以添加四个。