Made it back in one piece. Car just got washed because of the ridiculous amount of bugs I picked up over the 600+ miles. Totally worthwhile trip.
Marion has a lot of restaurants and fast food joints given it's size. The downtown area where I stayed was nice. It wasn't amazing, but it was nice. Hungry Mother State Park was near by (about 2 miles away) which offered swimming, paddle boards, canoes, etc. So a good weekend trip makes this 5 hour drive worth it.
Tazewell was barren. Not much to see or do there. Because it was so slim pickin's I recommend a south to north run and flip around to get back to Marion... it definitely had more to offer.