Yes. All the websites that offer free spin bonuses to win real cash prizes do so after you have a registered an account on their platform. They do so not only because theywant you to register and try their services, but also because they need to make sure you are legally allowed to gamble online.

All of the promotions mentioned here all have no wagering requirements, so once you win real money from free spins you can simply withdraw the funds back into your bank account.