Brian
I spent 12 months there in 00-01 ,and been back for about 14 fairly long trips since then...
been to many of the port cities and lived in Seoul....
as for the bikes..a few things...
illegal to ride on the Main highways... which can be a real pain in the ass trying to get anywhere
and as i understand it, you cant bring anything bigger than a 1200 over ( i may be wrong on this one, this might only be GIs )
i most certainly wouldnt bring ANY vehicle that i gave a damn about over there, maybe buy a throw-away harley ..the place is tough on vehicles..
as for housing, again, depends on where you are... mostly its overpriced, but well accomodated... many of the big apartment buidlings are well, disposable, ...
the food isnt bad if you are a little adventerous..... and you can get western food easily for a change of pace.
shopping is a national sport as is the wild traffic described below
if you are going back and forth a lot, the plane ride is a killer....
make sure your contract adresses business class at a minimum! this makes it bearable
the people are generally nice... there is much beautiful scenery... broken up by big annoying cities.... but at least they have decent mass transit..
oh, and stay away from SoJu..stick with Mr Maker and his Mark.. trust me on this

Id be happy to visit with you on it my brother,, maybe in Nelson?