Thanks for doing the trip report that I was too busy to do. We and another group made the summit the day before you, and saw that a team had been to the summit the day before. Since we'd heard the same info as you from the rangers, I stopped in to let them know that it was quite doable, but the person we talked to was quite uninterested, which annoyed me. I let him know that we and others had called and couldn't get any climbing conditions information (one team cancelled due to that lack of info), so that I thought that they would actually appreciate the info. He showed slightly more interest, after that, to coddle me, I'm sure. . .
One thing that I'll add is that many water sources had dried up, specifically the one at Lewis Meadows Campground, so that the only source was the silty Hoh River, which was fine if the water filter used is a Sawyer which is easily back-flusable, but sucks if all you have is a steripen or another type of filter. The water source at the Olympus Ranger Station/Campground is right behind the Ranger Station.