Editorial footage of casino

I am curious. I will be travelling by a casino and thought I would stop and get some editorial footage from the outside of the building. As usual I search stock sites to see how popular or over saturated a subject is. I noticed there is absolutely no footage of the 3-4 major casinos near me. So am i missing something. Are casinos off limits? I am obviously talking about footage that would be editorial in nature and from the outside not inside the building.