Within the main area they discourage that, but as others have said the enclosed portion is a small part of the creek system that make up the falls. The sheer rock around the falls within the enclosed portion also makes it a bit more difficult to put your feet in.
If you hike to moonlight falls , there are places along that to put feet in water.
There are places along the trail were you can get you feet wet and a spot were you can pan for gems.
Not sure about in seven falls proper, but the creek goes outside of the property. There are many places down stream, to get your feet wet by trails and pull offs with tables along the same creek.
If you can sneak it on the trails near the end haha. Hardly anyone is around.
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