All the casino mention "KYC", you will never find any casino without "KYC". They always mention KYC will be needed if they needed for several investigation, like multi-account, security account, prohibited country and other some issues.
For @OP, can we ask how much your transaction. If few hundred or thousand dollar, I have some experience with "Stake" around 2-3K$ can be withdraw without "KYC" and my account now platinum 1.