amaroo, that will be a very nice trip!
My comments:
1.- Macchu
When I went to Macchu Pichu in 2010 I stayed down in Aguascalientes - which required a pre-dawn queue to ensure getting on one of the first buses so that I could get registered at the top to gain entry to Huayna - they strictly control numbers for access there - you shouldn't have that problem, but make sure you enquire
Watching dawn break from the Sun Gate (?) is pretty special - it is a high point overlooking Macchu (opposite direction than Huayna)
I got my passport stamped with both Macchu and Huayna stamps - the Huayna one IIRC I obtained just before exiting the controlled separate Huayna area. I enjoyed the two quite pretty stamps - but in later years I washed that passport
Huayna is a climb, not a walk - there are steps but they are steep and there are lots and lots - but it is worth it.
2.- Lima
Lima taught me a true love of Peruvian food. No ceviche will ever be the same for me now. Lima itself is a very large, traffic-congested, filthy place. A few inches of rain would really clean it. And they truly love their security fences - some houses have things that rival the game fences in Africa! But the food makes up for it. Just pop into a supermarket and look at their vegetables - amazing potatoes, etc.
I enjoy sitting at any of the food places or bars that sit on the cliff above the beach - when you get there you will understand the topography - great to watch the sun go down.
3.- Titicaca
Haven't been there yet but plan to soon from the Bolivian side (only because I have a Bolivian friend and he keeps pestering me to visit his home country)
4.- Chile
I lived in Chile many years. May is a pretty dreary time of year in the central region (Santiago, etc). My recommendations for visits to Chile (time wise) would be:
- far northern Chile / Atacama - anytime
- central to mid-northern (La Serena) - summer Dec-Mar
- southern Lakes Region - summer again, but best in December just before the crowds arrive from Christmas through till end of March
Just a comment - I do the SYD-SCL crossing a fair bit, and for some reason flying east coast Aust to Chile hits me with jetlag more than any other time change on the planet. Don't know why. It is not as bad going the other direction.
Last thing - a question:
..... Both flights over the pacific are 4 class birds, hopefully, they will stick and we remain in 1A/1K....
I haven't seen a 4 class QF bird doing SYD/SCL for about 3 years at least - has that changed? I have quite a few trips back and forth over the next 12 months and would love to know!