They're all no more than names to me anyway, 4getmenot.
It is certainly annoying when double bookings occur (and, with computerised booking systems, it's hard to see how it can happen). But human error can creep into the best-run of organisations. (When I worked on the railways, I once managed to lose an entire train!).
I suggest that the couple screw every single penny that they can out of NCFC's hospitality operation, so that they can have an even better wedding elsewhere. I know Norwich well (I was there this afternoon) and I'd recommend that they look into booking the beautiful Dragon Hall:
http://www.weddingvenues.com/venue5476.html
or Dunston Hall:
http://www.weddingvenues.com/venue5528.html
Anyway, claret & blue are banned at Carrow Road. You'd need to dress like this:
http://farm3.static.f...70_7b1f1be663.jpg?v=0