Coffee, it shouldn't be that much. Perhaps take some time to work out the cheapest options for train and hotels? How much is the train?
TTTW has just suggested on the Friday Night thread that we have MNSN caring carrot lapel badges. I reckon that would be a good way for us to identify each other at the conference. 
Lisa, do you know if it's likely to sell out quickly even before 1 November? Dh is bleating on about waiting for payday to book.
Just thought - is dh allowed to be an honourary MNSNer for the day? He does actually have a MN account, although he only set it up to do a test when the privacy settings on my profile went awry.