there will be plenty of people up there. take more sun protection than you think you need (hats, buffs, glasses - sunscreen never lasts long enough). Take lots of water and start early. 3 AM from the parking lot is probably early enough if you're fast, otherwise it is more pleasant as a two-day trip. take a trash bag or waterproof pants for the glissade down! (remove crampons for the glissade)