it's a bit weird, the website doesn't really say what to procedure is (where to send the ticket and how to indicate that you want a namechange)
It just says this:
http://www.wacken.com/en/woa2014/main-tickets-shop/faq-personalization-14/
Name change:
How does the name change function?
After we receive a ticket, its validity and its owner will be verified, which is why a copy of his or her identity card must be provided.
Do I have to pay for a name change?
Yes. We have to levy a fee of 15 EUR due to the considerable effort necessary for a name change. We want to guarantee the best possible safety and reliability in personalization and change of name.
When will a name change be possible?
A few weeks after pre-sales start, name changes will be possible.
What happens, if my family name changes?
If the original name is still on the identity card (name at birth), this is not a problem. If not, a name change is mandatory including the usual fee of 15 EUR.
What can I do, if I lose my ticket?
Lost tickets can be deactivated and reprinted. There is a fee of 15€ charged for this process.
What happens if there is a misspelling on the ticket (inverted letters, typo etc.)?
If you only made a small mistake – for example Kathrin spelled without an “h” or one inversion of letters like “Miaer” instead of “Maier” we will still accept the ticket. If the name is misspelled to the point where it cannot be quickly recognized, it is mandatory to change name for a fee of 15 EUR. We urgently recommend to carefully check the spelling before submitting any name for printing!
Why do I need a copy of my identity card for the ticket exchange?
As the name change can only be initiated by the original owner of a ticket, he or she has to provide a copy of his or her identity card in order to be verified by us.