Bankroll separation
Hot wallet, cold wallet, and what stays on-site
Keep the amount you are willing to lose in a hot wallet, and everything else somewhere that requires a deliberate act to reach. Operators freeze accounts for routine verification more often than players expect, and a frozen balance is out of reach until it clears.
Do not send from an exchange to a cashier directly. Casino addresses are clustered by analytics firms, and the return path is what triggers compliance questions on your exchange account later.
Treat any balance on-site as in transit. The account is a place to play, not a place to keep money.