Why keeping money at an exchange or casino? I don't get it. At both sites you don't have immediate access to your funds since you don't control the wallet -> way too risky. Casinos can always come up with some story to not pay you ( and you have to make a rollover, at least 1x) or even worse they shut down. Same for exchanges. Also, both can be hacked and your funds are gone.

If you want to play it safe, store your funds at a non-custodial (cold) wallet, or better, several. Everything else is just playing around with your financial future.
Keeping your money at a casino for safe keeping must be the worst advise I have seen in this forum.