Why would you even play at such a casino?
Most of us if not all prefer instant withdrawal ofcourse. But there are still some online casinos that manually process their users withdrawal. Playing in on an online casino is matter of trust, i would rather play on one that manually process withdrawal but im sure that my withdrawal will push through.
Yes there are still some sites that do manual processing but ideally no player would want their payment to be delayed for whatever reason.
The reason why many people gamble is to make quick money, and with gambling, you cant tell what happens next. So leaving your money with a gambling site after winning is at your own risk.
I dont even gamble on a site that does not offer instant withdrawal. This is one of the things I look at before deciding on a casino site. I feel gambling sites cannot be trusted, even the so called reputable ones, anything can happen between that period of delay and moreover, withdrawing my money immediately, I can do other businesses with it that will give me interest rate.