And also about KYC it's will expected once you are using a licensed casino cause most of them ask for KYC but it takes a few time so it's better to obey with it
It's not that simple. Some gamblers don't feel comfortable providing their KYC in any site unless absolutely necessary and Rollbit's recent KYC related accusations steered away many gamblers.
If op has no issue providing his KYC at any stage in either of these casinos, he should go ahead and invest. However, if he has issues with KYC, he should avoid them.