As a National Park Service Trails and Rails volunteer, I can tell you that, for many years, there was a T&R route ATL-NOL and return the next day 3 or 4 days a week. and it was very popular. About 5 years ago, Amtrak decided they would not cover the hotel and meal cost for the T&R program, so the route was cut back to ATL-BHM and return the same day. The number of volunteers declined as a result. Now, the new schedule totally precludes a T&R route since the return trip would be largely after dark and the pax don't really want to be bothered. That routing also precludes much discussion about the Civil Rights history along the route, since much of it was south of BHM.