My experience with Crystal Palace was mixed.
I had very good luck with video poker and tried to withdraw the deposit and bonus, leaving my winnings in the account, after finishing my first deposit bonus wagering. I always do that to see how well the casino pays cash-ins and to officially end the promotion with all of it's restrictions. Some casinos keep their bonus play restrictions as long as the bonus funds are still in your account... even after the wagering requirements have been met!!
Two times during the next month, the cash-in was reversed back into my account and (based on comments in this forum) I suspected that I would never see any money. During this time, I went to the casino to check on the withdrawal status and play video poker with the balance of my winnings.
After the first reversal, they said to try it again. After the second one, they said that it had to be for MORE than the sum of the deposit plus bonus, to show a profit from wagering. (Some casino's will not pay out the bonus if you have lost any part of it.)
OK... The third time I requested my full account balance and soon found that I could no longer get into the casino to gamble. (I have never had an account locked before.) Oliver Curran gave this reason:
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Unfortunately your account has been closed by the management due to the nature of your wagering.
As you have wagered just over the minimum requirements, your account will not be kept open and you will not be authorized to partake in any future bonuses.
However as you have met the terms for the initial sign-on bonus, your current withdrawal will be processed to you shortly.
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OK... it's their casino... they make the rules! I did not argue about it and found that Oliver Curran was responsive to my email and was very courteous. Three weeks later, I did find my full account balance in my NETeller account.
Steve