When your claiming any bonus from online casinos you must always read the terms and conditions. As some of the terms the casinos will put on promotions is totally out of line. Plus if you win, you may not be able to cash out.
It is a great way to make your money last longer, be in reality if you are there with the idea of winning, then you really don’t want to accept any bonuses. So first just make a purchase and play through the money, if you win then cash out, no issues. The casinos are going to give loyal player promotions all the time anyways. For the best VIP promotions join Platinum Play.