The chance of losing a lot of money is very high since you are drunk, your decision making is messed up.
This is only applies to gambling games that requires decision making such as poker. But games like dice games, and roulette, this doesn't apply. Sober or not, you have the same chances of winning which is pretty low. With the same logic, being sober and going to the casino will make you millions.
To control the amount of money you spend in gambling, you just bring only the amount of money you plan to spend.
How about writing cheques?
Leave the ATM card at home.
As well as jewelry like earrings, rings, and watches. Bring just yourself.
If it's possible go to the casino using a cab, much better, there are loan sharks waiting around the casino who accepts cars as collateral for those who wants to win back their money.
I really wouldn't go to the casino using a cab because what if you win instead? Will you really risk being in a car with a stranger while holding a lot of money. I really think that if you are at that point that you're ready to sell your car just to continue gambling, you're far deep down the gambling rabbit hole. None of these advice will help since you're ready to sell something that is very useful to you and is a necessity in your daily life. But I guess we never really know what can happen in the casino that'll push you to your limits.