As a matter of interest, which hardware (specifically laptop) did you take along? I'm about to do a trip and am unsure whether to take a MBA on the road with me.
I've got a 13" 2009 MBP w/ 2x internal hard drives. Also have a 3rd gen iPad. We sync everything to DropBox, but had major problems getting our SLR shots and my work synced while we were in Bolivia, the internet there was terrible. Argentina, Chile and Brazil have damn good internet.