oooooh A Christmas Eve wedding sounds lovely! Good choice!

I agree phone the reg office and see what they say. However I also think your boyfriend is right, on Christmas Eve people will be in such high spirits that anyone you ask on the street would be more than willing to help out, but like you I would want something sorted just in case

Plus there is no point leaving it to chance if you are worried, get on the phone and see what they say. Let us know how you get on....