Every casino has a dressed code to follow, but if you are on their list of high rollers they can provide you with an attire suited for their best customers, they are indeed very strict in their rules because they expect the people coming in their casino are high profile and with good positions in public or private company.
You are saying that they treat other gamblers as a vip ? If they are high profile or high rollers ? I think ive already saw some of that casinos on our local place but they arent strict and they wont remove anyone else . you wont remove you if your only a small time gambler but as long as you are following thier rules properly such as no loitiering inside , no shouting , etc ... But there are some that insists to violates and they are hardly being caught because the casino is crowded .