If you take bonus and the wagering is not over 30x, and EC is a valid bet. It is not hard to pass trough, you should have a part of the bonus at least. Done it some times, but the casinos still to try I do not trust. One casino gave 5000 dollars bonus and never pay and I was wagering through. Some have in very small print, the bonus is only for slots, and you get know that after the playing. Open account just for that, means a mailbox spamming.
I think even the payment provider, forum owners, and other sources as google leave out addresses. We can see a peak of spam after certain things we do. At one point I got 300 mails from casinos in a week.