I asked what the "pack" was and this was Nikon's reply:
Thank you for contacting Nikon regarding the NPU membership,
The welcome pack for this scheme usually consists of the membership card and some brochures, if there is a current issue of the Nikon Pro magazine this is sent as well, as there is not a current issue the magazine will be sent to the postal address on your account when the new issue comes out.
The other advantages of NPU membership are:
Freephone Technical Support
Talk directly to Nikon Customer Support specialists with a dedicated telephone line.
Free Subscription to Nikon Pro magazine
Read features of leading professional photographers, including 'how they did it' articles.
Notice of New Products and Technology
Be amongst the first to hear about the latest Nikon product innovations.
Invitation to Free Seminars and Other Professional Events
Attend exclusive seminars and other professional events.
Discounted Nikon Training Courses
Learn more at our practical Digital Imaging Training Workshops. As a Nikon Professional User you can receive a 10% discount.
If you have any further queries regarding this matter, please click the link above to update your question.
Kind Regards,
Nikon Europe Support
www.europe-nikon.com/support