Creditcard fraud is a serious concern for online casinos and if you information doesn't match their security checks you may have a problem cashing out. If the casino pays a bonus, wait a while after registering for a confirmation email. It may list different qualifying conditions than on the website. Assume the more rigorous conditions apply. You can always confirm with customer service and make a note of the conversation including whom you spoke with, and what was said.
Many gamblers move from casino to casino chasing the bonuses.
To avoid appearing as a bonus hunter, always wager more than the qualifying conditions state. If you intend to gamble again at the casino, don't cash out unless you need the money. You can avoid the transaction fees this way. If you leave money in your account, check to see how long it can remain there without activity. Some casinos specify that you must either play again or cash out within say, three months.