What's funny is that of the chains on that list here in CA, none of them that I've noticed have had signs up prohibiting weapons.    Of course, CA has nothing in the law giving special weight to an establishment saying you can't carry either, so it's just a hey, leave or we'll call it trespassing thing. Pretty toothless. Just like no shirt or shoes, no service - which doesn't get enforced near the beach (unless you're fat, that is).