I'm in Alabama. I know some vegetarians (no vegans, though). But I know of no restaurants that specialize in vegetarian or vegan food. Even the local healthfood stores, if they sell food, have food with meat and/or cheese. Though for all I know, there could be a huge vegan community and they're all just eating at home!
There used to be a couple in the Pensacola area and I believe there are several in Destin/Fort Walton area. Everman food store in Pensacola has a good selection, including soap.
Could a tax deductible sales trip and beach visit be in the works? http://www.everman.org/departments/grocery/ More and more restaurants offer vegetarian selections but the one restaurant I went to a couple of times that was strictly vegan has closed. Not my cup of tea, but gave it a shot.
Alabama is purty state. I like it!