There is nothing called "Rails and Trails".
You are probably thinking of "Trails & Rails"... which is a partnership between Amtrak and the National Park Service that places volunteer guides aboard the train on select routes. They usually wear green shirts and are in the lounge car doing narration over a wireless speaker system and having handout materials/maps for folks. Their season generally runs from mid-May through Labor Day-ish. With that said... each program's schedule is determined by that specific sponsor park's superintendent and chief of interpretation ranger... and is a little different. Some programs begin in early spring or run into late fall. The 2017 schedule has not been released yet as far as I know... so check back in a few months from now on Amtrak's website. Only a handful of programs operate 7 days per week -- most run just between 2 to 5x per week. So I would say your chances are 50-50... maybe a little greater. The program on the Crescent which you were referring to operates between ATL and NOL with ATL-based guides from the Martin Luther King, Jr. National Historical Site. One day they will ride south ATL-NOL -- overnight in NOL at a hotel -- and then ride back the next day NOL-ATL.
Here is a look at the old 2016 schedule:
https://www.amtrak.com/ccurl/156/39/Amtrak-Trails-and-Rails-2016-Schedule.pdf
If the schedule doesn't change for 2017 -- the program on the Crescent runs May 25 to September 7. Guides are on from ATL to NOL on Wed, Thrs, Fri, Sat, and Sun... and guides are on from NOL to ATL on Thrs, Fri, Sat, Sun, and Mon. Again, that could very well change... several Trails & Rails programs are having budget issues and are scaling back in 2017 from what I am hearing.
I used to be one of the head Trails & Rails guide on the Empire Builder (Chicago to St. Paul-Minneapolis) from 2007 to 2010. Then, between 2012 and 2015... my wife and I were the Chicago Coordinators for all of Trails & Rails and managed the program that operated on the Southwest Chief from Chicago to La Plata, MO. We were also Amtrak/NPS certified safety trainers for the guides. In the latter years, we (and the non-profit American Passenger Rail Heritage Foundation which co-sponsored our route) found it a real pain in the rump to deal with the increasing red tape the National Park Service (and Amtrak to a lesser degree) was throwing our way. Tied were severed with the NPS on July 19, 2015... who promptly cancelled the program on the Southwest Chief because no one else wanted to step up and manage it. In fact, almost 2 years later... Chicago still does not have a Trails & Rails program on a long-distance route!!!
After thing ended, we worked with the APRHF to form a similar program called the APRHF Rail Rangers. We do Trails & Rails-like programs on private rail excursions in Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, and WIsconsin. We also were doing a program in partnership with Iowa Pacific on the Hoosier State between Lafayette and Chicago on Sunday mornings. (Since we have no desire to work with Amtrak, that program's last run will be this weekend!!)
An interesting trivia nugget for you that most people don't know ---- the National Park Service originally wanted to call the onboard programs on Amtrak trains "Rail Rangers" --- however Amtrak's marketing department insisted on Trails & Rails. The National Park Service hated that because they though it would be confused with "Rails to Trails", which is the group that converts old railway right-of-ways into hiking trails. They were right -- because I can't tell you how many people over the years thought we were part of that group. I guess Amtrak won out and the program was named "Trails & Rails" in the end. Our non-profit copyrighted "Rail Rangers" in 2015 because we liked how it sounded for our programs and as a tounge-in-cheek poke at the Trails & Rails folks at Amtrak and the NPS.
On our website (
http://www.railrangers.org) we have an in-depth history of how Trails & Rails and Rail Rangers was formed over the years... it's actually pretty cool. Click on "About Rail Rangers" and then "Our Story" link.
Of course, we'd always appreciate your "LIKE" on our Facebook page too!
http://www.facebook.com/railrangers
(NOTE TO MODERATORS: APRHF Rail Rangers is a 501©(3) non-profit and I sustain no personal financial gain by discussing it on this forum)