Letter of authorisation

Can you please have a look at this letter of Authorization which I'll be using for a concert?
I want to attend the show by the end of March but the tickets were bought by my cousin with HER credit card. (She will not be at the show though).
I've heard that the ticket-collector should be authorized by the card holder to pick up the tickets at the box office.

LETTER OF AUTHORIZATION

To: The tickets venue/box office


This is to certify that I, the undersigned (name surname) , with ID number _______, with billing address "_____, Albania" authorize ____________ with ID number .......... and Passport number: .........., with address “___________” and e-mail ______________to collect the VIP Platinum Package/ticket (Order #: ________) which was purchased using my credit card with the last 4 digits:________

These tickets can be used by ______ to attend the ______ concert and everything that is included in the VIP package, for the date 22.03.2014 in _______Belgium.

The will-call name is under (name surname)

***********

What do you think?

THanks!