Players must understand that there is a distinction between cashable and non-cashable. Take note that platforms do not always state this clearly when they offer a welcome bonus, but it will be in their terms & conditions. You need to pay attention to this though as non-cashable which is also called a sticky offer can be used playing any game, but funds won cannot be kept. All money that are won during play, must be used with no potential of withdrawing winnings. Cashable is as you imagine, eligible to fast withdraw after meeting wagering requirements.