Some if not all the other sites that I have went to during the past two weeks are nothing but headaches for their customers waiting hours even an entire day for their bitcoins they deposited to be sent to their casino wallets.
It is not because sites or services are evil and want you to wait longer. We can thank Bitcoin network for that delay.
Currently we have over 143605 unconfirmed transaction, absolute record, I've never seen more than 100k transaction unconfirmed.
Casinos just want to make sure that there is no double spend going on and most of them don't use transaction confidence system.
Yolo is once more ahead of the pack.

More casinos should accept other coins or create their own token coins to use on their own network so not to have these problems thus not having about 10% of those transactions contributing to the highest amount of unconfirmed on the slow blockchain as it stands.