Mostly, you will just see many different kinds of foliage, trees, moss, and perhaps a bear or some deer. There's a small stream running through the park, which consists of a few campsites that are first come, first serve and rent for seven bucks a night (if the Ranger decides to make the trip). This is best for those who like to "rough it." No electricity available. I personally would just go up for a picnic, then keep on driving to Max Patch for a short hike.
Every time I go up there, I can't help but think of all those poor tourists stuck in traffic in Gatlinburg, on their way to see the leaves. May I suggest somewhere more remote, more peaceful, and waaaay less traffic?