I have a copy of the Alabama Attorney General's opinion to the Honorable Van C. Gholston District Attorney Second Judicial Circuit Butler County Courthouse where he had made an inquiry about it dated Mar 22 1984 that states that it's legal to open carry in Alabama, but there might be a few places that you can't,like courthouse, airport and places of business that don't allow it.
And I also have a copy of a 2 page pamphlet that folds so you can carry it in your pocket titled "The Law and Open Carry in Alabama". I don't remember where the site is that I found that pamphlet, but I'm sure you can find it on a Google search very easily. If you can find those two articles, it would be wise to print them off and save a copy to carry along with you.
Bill, your link didn't show up in the reply.