Oh, to be back in Blighty!
A probable world record transit time through the new shiny Terminal 2 at LHR and into the waiting taxi back to Hove. I felt a little bad that between us we said no more than a handful of words to the driver before lapsing into light but rhythmic snoring around the M25.
So, overall what have we learned?
Bolivia is beautiful. Bolivia is cheaper than Peru. Bolivia is very high. All our pre-planned arrangements made over the internet worked like a charm - no missed connections and no failed communications. Four weeks is a long time away from home and 2 days in New York is wholly insufficient.
Our itinerary was full, but not to the point of full-on hectic-ness. Sure, looking back there are some tweaks we'd have made - extra days in Lima, La Paz, Sucre and New York, counterbalanced by skipping Huacachina, a day less in Arequpia and a day less on Isla del Sol, but these are refinements, not wholescale changes.
Overall, I think I might be back in South America someday ...