IMHO the 2 best shows in Alabama are the Collector Show in Hoover ( B'ham ) & the Huntsville show . I missed the Shriner show this past weekend in Mobile due to weather Sat & got up too late on Sunday . Probably hit the P'cola show this coming weekend just to see what's available .
The ALGCA spring show is the weekend of March 21st this year. I went to it back when it was still in the Birmingham Convention Center and it was huge. I plan on making the pilgrimage. Go early enough and you would have time to visit the CMP in Anniston before they close for the day.
I've been to it years ago. My wife's family was from Montgomery. As I remember it, it was pretty good. a lotta tables and a lotta stuff. The location is on the Eastern By-pass.