You might be interested in the ascent of "Wings of Steel" which originally took Mark Smith and Richard Jensen 39 days, later also completed by Ammon McNeely and Kait Barber. The first ascent team had to deal with a lot of problems too. Not only less modern gear, but open and dangerous hostility from some of the local climbing community.
http://www.snagfilms.com/films/title/assault_on_el_capitan
http://www.rockandice.com/lates-news/el-caps-hardest-wings-o...
http://gripped.com/news/dec-16-2011-top-climber-confesses-to...
And unless you REALLY toss and turn in your sleep, you are as safe as your anchors (and if you are doing this, you know how to make anchors. Or are so incredibly stupid that you are trying to win a Darwin award).