The FIRST website now has a map and description of suggested downtown Atlanta walking routes. Locations include the GWCC/ dome, downtown hotels, and the aquarium. There is also information on motor coach parking.
Description
http://usfirst.org/uploadedFiles/Who/Homepage_Headlines/2008_Headlines/CMP_4.15.08.pdf
Map
http://usfirst.org/uploadedFiles/Who/Homepage_Headlines/2008_Headlines/Revised_DT_Map_4.15.08.pdf
I do not recall FIRST posting such a document before. Maybe it is due to construction as a result of the tornado.