Ian--I envy you the MkIII. It is a _very cool_ camera. I played with one a little this Summer. Until the Nikon D3 ships there certainly isn't anything in the Nikon line that can touch it in many respects.
As to travel, yes I'm pretty maxed out. Now when I add a trip I have to stop one or I'm at risk of becoming a nomad!--David
Looking forward to it - but it is still sitting in the hub - will be glad when it starts it's journey south LOL