This cache may be done in a daypack hike if you leave from the valley camps that are normally overcrowded and are mainly used by families and older couples. If you plan to camp there be sure to reserve space well in advance. I don't suggest this area myself, as I'm sick of having all the things I try to get away form being around me. Personally I suggest the way my brother and I went.
Warning!!! Going the way we went is at least a 3 day hike and 35 miles thru the Mountains, with multiple elevation changes. Don't attempt this cache unless you proper equipment and can backpack it. My brother and I started at N 37 52.370 / W119.21.214 and stayed the night before hiking the first 10 miles to the Sunrise Camp located at N 37 47.633 / W119 26.051. The next day we then daypacked the 15 miles round trip to the summit of Cloud's Rest and back, then back out the way we came on day three. You will need something to purify your water as this is the wild.
For your log to qualify for this cache you must provide the following or your log will be deleted:
First, you must show your GPS in the picture. No "GPS is in my pocket" comments. The picture must show you holding your GPS.
Some have stated that just having a photo of yourself with Half Dome in the backgroud should be good enough and that it is the norm for other virtual caches. While many virtual caches do have that as the only requirement, there are others that do not. In fact, there is one just done the street from where I live that I have not yet finished as I need to take a messuring tape back to take messurements of a stone slab. I have a pic, I made the case, and was denined a log as well.
Second, you must stand at the coords given.
Third, a second picture of your GPS showing the coords you are standing at.
I think that asking these requirements is not much to ask because you know ahead of time what they are, and they are standard for these types of caches.
And to prove that I'm not joking about this I have decided to keep track of the number of deleted logs: 9 as of 10/14/12.