There weren't that many people when we climbed, however we heard that 2 days before (Memorial Day Weekend) one guy counted 75 tents at Lake Helen.....we counted only 3. Anyways, if you need to acclimmate, you can stay at Horse Camp ($5), which is nice, has a solar toilet. Other things of note: there is a $15 summit fee (don't get me started), and the snowpack is 5 weeks ahead of schedule. Definitely alpine start or pay the consequences. We took off from Horse Camp at 1:30am, which worked out nicely. Took us 9 hours up, 3 down. (I was slow because I got weak w/ altitude). Clear Creek is in good condition too. Check out Jeff Smoot's "Climbing the Cascade Volcanoes" for other routes.....or just get it because it is a great book. Bring a camera and have fun!