Can you withdraw it after make some bets?
The bonus rate is good, and you can enjoy with small money of your deposit. I am always cautious with Deposit bonus, because at the end, if my account has issue with withdrawal, the bonus is nothing, too small than my deposit value.
Testing and enjoying it but with not too big deposit because of bonus you might have but I see 30% bonus program from We88 is very attractive program for their users and can help them acquiring many new users.
(1) You need to deposit with crypto, to be able to withdraw crypto with a much lenient KYC policy. AFAIK no option for deposit bonuses if you play with crypto.
(2) If you deposit with fiat which has many bonuses, you must withdraw in fiat meaning KYC.
(3) You can't deposit fiat and withdraw crypto.
It's advised to use crypto only if you want to avoid KYC as much as possible.