Concealed carry in Alabama

I'm flying in to visit Huntsville and I plan on carrying my G19, and maybe my Shield while I'm there. I'm from Colorado and have my permit here. I know we have reciprocity with your state.My question comes down to: what is unique to Alabama concealed carry?Do I need to be aware of any liquor related restrictions? I personally don't drink, but if I go into a bar or a restaurant, do I need to be cautious?Do no guns allowed signs carry force of law there?Do I need to be aware of LEO interactions? IE do you have duty to inform?What about music/sporting venues?Any advice would be appreciated. I'm an instructor here in Colorado, but haven't done much research on your fine state. via /r/CCW http://bit.ly/2WCB5UE