Thanks will read your trip report!
Did you rent or own the helmets? As for storing stuff at the hotel or travel angecy, if it's just a second pair of boots, I might just put it on the mule...
Speaking of which does the choice in hotel matter a lot? For a couple of days in Las Paz?
'm also talking to a second guide, Eduardo(from BolivianMountainguides) and is reassuring to hear from people like you that he will take care of water and even proper food (btw, some people that used his services were picky about food, did you have any preferences?)
I shall bring my tablets(Micropour), maybe my gravity filter and maybe even a Steripen.
As for boots I bit the bullet and bought (although I did have new Salamon winter hiking boots, there were more for city, albeit rated to -20C), Salewa Pro Guide
http://shop.alpineinstitute.com/products/pro-guide
Also b/c they seem adjustable for approaches etc.(and I won't have to carry my leather Garmont boots up Parinacota, maybe only for trekking).
Need climbing crampons, will get them once the boots arrive.
Another reason that made me buy my own boots, was reading on the forum how some time the insulation of the double plastic boots you could rent in Las Paz might be gone (although the boots might still look good), so you'd freeze.
I'm just a hiker not a climber, so Parinacota being just a hike might be ideal in my case. Easier/safer then most 6k over there, correct?
Might use some of the ideas you mentioned for extra aclimatization: so far I was chatting with the guide among the lines of:
TREKKING
COPACABANA
LAGUNA AJUANI – HUAYNA POTOSI
ITINERARY:
DATE DAY ACTIVITY
1 Arrival in La Paz.
2 LA PAZ – COPACABANA.
Depart La Paz for Copacabana. Lunch in the hotel in Copacabana.
The afternoon is spent visiting Copacabana, its beautiful church which is host to the "challa" ceremonies, and the Calvario hill, an pre-hispanic pilgrimage destination. Night in Copacabana.
3 COPACABANA – ISLA DEL SOL – KHOTIA.
Transfer to Copacabana where we board a small boat towards the Isla del Sol.
A walk across the island (approx 3 ½ hrs) to visit the several ruins, Inca terraces and the "fountain of life" in Yumani.
Back to the mainland by boat and later transfer to Ajuani lagoon, starting point of the trek.
4 LAGUNA AJUANI – LAGUNA JURI KHOTA
The path is winding but appealing until we arrive at Jistaña lagoon, where we take a lunch break. In this point, the path starts ascending toward the summit. We arrive at Jurikhota lagoon, beautiful and isolated, surrounded by snowcapped mountains.
5 LAGUNA JURIKHOTA – LAGUNA GLACIAL – PASO AUSTRIA - CHIAR KHOTA
From Laguna Jurikhota we begin by ascending up a steep slope to reach Laguna Glacial a jewel nested at an altitude of 4900 meters at the foot of Condoriri.
From there we keep climbing to a second pass (Paso Austria, 5200 m.) before descending on the other side towards base camp, at the edge of Laguna Chiar khota.
6 PASO JISTAÑA – BASE DE MARIA LLOCO.
We continue trekking, Today's pass is the Jistaña pass, with an altitude of 4,900m, taking us into the valley of Racacha valley. There we will camp at the edge of the Hichu khota, at the civilised altitude of 4,450m. Base of the mountain Maria Lloco.
7 PASO MILLUNI – BASE CAMP HUAYNA POTOSI
Our final pass is the Huallatani pass (4,850m). From here, on a clear day we can enjoy the stunning views of the mountains Maria Lloco and the mighty Huayna Potosi.
In the afternoon return to the city of La Paz.
Merry Xmas!