http://vimeo.com/69452338
We recently climbed the Regular Northwest Face (RNWF) on Half Dome in a day (June 26). I made a video of our 17 hour ascent. What a great day in the mountain with my buddy Drew. Hopefully the video gives you a decent idea of what it is like on most of the pitches.
There were a couple of guys camping on the summit that came up the cables. With the recent rain (day before), there was water in many potholes and they had a filter. We were able to get some water from the summit! If it rained recently, bring some sort of way to clean the water in the potholes.
We brought 4 liters of water on the route.