@Bee says "1/2 ltr water carried -- all other taken from planned/confirmed sources."
@WBT says "I could not be bothered stopping for water at known sources, I'd rather keep moving, so I haul up a couple of liters. However, I take 4 L up from Trail Camp."
I use a mixed approach. I usually dip & drink along the way, but have the regular chemicals if the source looks in any way suspicious.
From Guitar, I carry 3L, knowing I'll be thirsty the last couple of miles before pulling into Portal.
I'm planning on hiking my first r/t day hike this summer (prior trips have been from the back route). Based on my calculations, I'm going to carry 4L from the TH, again knowing I'll probably be out by LP Lake on the return.
If I really need to, I can treat some water there before heading down, or just gun it and rely on the store's abundance of good things to eat/drink when I arrive.
As for weather gear, I always take my poncho for overnight trips, no matter what. I've been surfing since I was a teenager, and even in tropical conditions, wind against wet skin can chill you to the bone.
With the poncho (+ tarp) I can put on my down and wait out a storm. As others have noted, sloshing around getting wet is a sure recipe for potential problems. The wicking effect practically guarantees you'll be wet in areas that weren't directly impacted.
And of course, granite/trail in wet conditions means you're going to be traveling slow(er), so you most likely won't burn enough calories to compensate for the chill.
