Going on a SB AT, 4 day hike in late July. In planning my hike i noticed that Lewis Mountain Campground is not that much farther then Bearfence Hut, but Lewis was first come, first serve. Do you think I'll have a problem with getting a stop on a Friday night?? I'll be starting the day at Rockspring Hut, so it is a 12 mile day. What time do I need to arrive at Lewis Mountain to secure a tent space? Is it worth trying for one (versus Bearfence). Thanks!!