My humble advice is stay as far away from Bonuses as you can. I've told the story before but I'll give a brief summary:
On MyBookie, played Baccarat and built up a couple of hundred into several hundred. Decided to bet on NFL. Used bonus money and won. I was warned by @W84it not to do it but I didn't understand. Well, I attempted to withdraw some money and they wouldn't allow it. Not one red cent! They said I had to "satisfy" the rollover requirement before taking any money out of my account. The requirement was that I had to put into action $3,000 to be able to withdraw my money. AND, I had to bet on sports. So, I figured out how many days and how much money per day I had to put in action to either lose it all or get some money back. It took me a month betting on NBA, College basketball and some hockey, about $100 a day to end up having a balance of a little over $300 when I had finally satisfied the rollover requirement. I immediately withdrew all of my money, basically breaking even, feeling like I beat 'em. The rules are on their website but hard to understand for a newbie. Bottom line, bonuses sound great but make sure you know the rollover requirements so you can actually get your money if you win. And other Casinos might have different rules so find them, read them and understand them!