Stake is a reputable casino, for some casinos that might not ask for your KYC before you play, they can always ask for the KYC later on and it can be later after you have won a huge amount and wants to withdraw it, then they will ask for the KYC and you can not imagine the kind of document they will want you to upload. When I passed my KYC on stake, it was just my national Identity card I use and a utility bill for address proof.