To be honest, this video is nothing special, and most of things mentioned are common sense, and not stuff that "casinos doesn't want you to know". Like it is obvious that there are bunch of camera in casinos, they don't hide that at all, or advices, and bunch of stuff are just generalizations, like high ATM fees or releasing lavander smell to relax the gamblers (honestly never experienced that).

While I do like online casinos too and they do have some advantages (they usually have higher RTP), I still prefer brick&mortar ones, simply due the atmosphere there, it's more fun, especially if you are there with a couple of friends.