I was there, today (Friday) from 8:30, until close, 7 p.m.. Excellent weather, started off with a small crowd, then topped 16,000. The lines were INSANE, Wildfire was all the way to the Plunge entrance (tunnel), PK was headed down the hill, and I can say I've never seen the Grand Expo so packed! The cave is only giving "half" tours, you walk down to the shoe room, then walk back up, because of flooding.