Be aware that the road to Tilly Jane Campground or Cloud Cap Inn is not open until later like June or July. Before then, you will start some 2-3k ' lower on the mountain making it more like a two day. Also, last July 3 the bridge over the Elliot glacier runoff creek (can't remember the name)was out but there was a place to jump rocks across (though in the dark we didn't find it till on the way down).
Last July 3 I found the snow dome (9k') riddled with crevasses and some were covered over with no depression other than a solitary 24" dia hole with some tracks leading to and from the spot.mmm...
