I have listed what the casino may doubt in the person of any overly biased employee, but this does not mean that a specific employee expresses the position of the casino itself! All that a player can operate before verification by the casino is an identity card, all his payment details are controlled by those who manage the transaction. And if you look at the rules for working with payment services, banking structures, contracts, etc., there is information that the client has no right to disclose! And no casino with any rules has the authority to request them from the client! Remember this before / telling anything to an employee of a specific gambling establishment, regardless of what he asks, always gently hint to him about his powers and your restrictions under the contracts!