I've seen some drunk customers removed before at a casino. It caused quite a scene and these 2 guys wouldn't stop talking trash to everyone and constantly swearing. I do most of my gambling online anyways so it's not like this is a frequent occurence for me.
In the old days if you misbehaved or were caught cheating they took you to the back room to "teach you a lesson".
Oh yeah, mostly, its foreigners who played and get drunk and created a scene. Casino's security step up and to tossed the two. They are swearing on everyone who looks at them and there are some locals who wanted to smack those guys. hahaha. Security and the Police step in and I don't know what would happen if those 2 keeps on bad mouthing everyone there in the casino.
But on the other hand, I saw one foreigners who got drunk and play on a roullete and he is very lucky that they and he has is very willing to give some of this winnings.

I never faced such kind of situation, I mostly visit a casino when I am in full sense, I do not know why people mostly come to casino while they are drunk where they can only create problems for other people, I think we should only visit a casino when we are in full sense.