Doing an AT Section from Clingman's south to Fontana (and beyond). What should we expect from this section in late Septmeber? We will be taking a leisurely stroll, with stops at Siler Bald, Spence Field and Campsite 113. Looking for trail conditions, shelter/campsite info, water, and just generally what to expect. I have been to GSMNP dozens of times, but have never stayed in the back country.