There were a few other people that came and went as I set up some longer exposure shots, but for the most part it wasn't too crowded. The constant mist coming off of the waterfall made it challenging to keep the lens and filter clear of mist (it was a losing battle), but I managed to get some nicer images before everything was damp.
With the ambient light filtering through the clouds and trees, the exposures were taking around 4 minutes, making me much more selective and precise with the angles in photos that I was looking for. It also made it much more likely to have a whole bunch of misty spots end up on the lens, and everything was so soaked that I couldn't wipe away the water without leaving more water behind. All in all, it was a good day for a hike and a pretty waterfall.
Most of these images are also on my smugmug site. If you like a particular photo and want a print of it (without my name scribbled on it) just click on the image and it should take you to the corresponding page, and Thanks!