Not a good choice of hike if you are in mid-season in the middle of the day and hope to find peace and quiet and have the falls to yourself. There were probably 500 people or more on the trail just during the time we hiked it (mid-afternoon in June) so getting a photo without others in it was difficult, but on the other hand, finding someone to take a shot of you was no problem! This trail has been improved constantly and is much easier than 20 years ago when only the first 1km or so was paved and the rest was "improved" with rocks placed to make the steep parts easier but still was rough and sometimes tricky. Now it is paved for the lower section and well built for the rest allowing for people to go with rather lightweight footwear. Still the upper section in the mist can be very slippery so I would advise at least a good pair of running/walking shoes. If you choose a good time of day (morning is probably best) and the wind is blowing from the right direction and the sun is out, there will be spectacular rainbows on this hike. There are numerous excellent views from all along the trail and a vertiginous one from the top of the falls. The Emerald Pool and the water slide feeding it are also an impressive sight.
With direct access from the Curry Village area and the shuttle stop at the trailhead, this will always be a very popular and heavily used hike. But if you can ignore the crowds or go off season or very early in the morning, it is certainly worth the effort.