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Sometimes not having a demo play pisses me of

But it doesn't really matter a lot.
I would be annoyed if the casino will hold the funds without having any reason that makes sense. Luckily, I'm happy that I have no experience with that. All of my withdrawal requests are processed and confirmed within minutes, that one is a huge plus factor.
Giveaways, of course, codes, contests, etc.
Of course we will be annoyed that our funds are being held for no apparent reason but this usually happens to big wins but for normal wins like that we will not have this period especially without reason to hold funds in the account.
We chose a casino with an automatic and not manual withdrawal process this is a little boring if we have to wait a long time, because we are small gamblers so we won't feel any problems except for small things that can be solved via live chat.