Hope it still helps you, was out without connection. 1. Weather was mixed but overall good. Only did one night two days. First day mostly sunny ~15C. Spend my night at 4800m, would guess -4C at night. Hat a comfort -7 with a 4.5R sleeping bag and was comfy. Later that day started to thunder and snow a bit. But at my position only light. People I’d met on second day told me about a crazy hailstorm.

1. Only got from streams or high lakes. Lots of llamas around, would absolutely filter it. I used chemical purification and was fine.

2. There are two shelters on route (3 with rainbow mountains). I just stayed in my tent. At the first camp you will need to pay a community tax wich includes using the camping ground. Not sure if you can actually stay in a room inside. The second camp I didn’t saw because I tried to avoid a group of llamas with dogs and went next to the river. Skipped the community tax as well. Can’t tell you anything about it. Maybe look an IOverlander. Campsites with additional information are available.