Theoretically, this is possible, because no deposit bonuses are given without you depositing money. However, before withdrawing, they have to be wagered. So, in most cases, it is necessary to make a deposit before withdrawing.
No. Promos are credited only to those who have registered and started playing for real money.
Yes. Mobile players get access to the same features and promos.
Yes. Many promos have such restrictions. You can immediately learn how much you will receive and be able to withdraw in case of a win.
Yes.You need to decline the promo before you start using the bonus money (or free spins). The option to decline is written in the terms of the offer.