Update, the withdrawal went though and has now been sent to pending.
I did a 500x hit on the slots.
I guess mintdice is processing all the transactions manually,so worth to wait for that 500x reward.Picking up the high priority fee will make things much faster!
I think manually is a common concept in casinos, there has been a lot of people who have abused the automatic system with the double spending method of nonconfirmation with zero fee etc etc which goes back to the sender because the fee is not enough and it is not getting picked up by the blocks.
It means if casinos let the automated withdraw work, they would see the money coming in and then they would credit the gambler and if they lose they get their money back anyway, if they win they both get their money back plus the wins. Hence the automated system doesn't really work anymore, maybe if the confirmation process takes longer, like takes 3 confirmations to get credits but that would mean gambler can't gamble right away and their gambling hype may die.
The way that most casinos deal with this is they have some system which analyses the deposit and it can tell whether it can be a double spend attack or not.
For example if the deposit arrives with a fee so little that it would take forever to confirm it would automatically flag the deposit and wait until it confirms with the network. Same with deposits which have inputs which were previously linked to double spend attacks. It would assume a double spend is possible and would automatically flag the deposit until it has at least one confirmation.
I also think if a deposit is sent with a replace by fee then it would also get flagged since they know that it can get resent to a different address. If a transaction is resent without that enabled I think it would get flagged by most nodes and pools and not get processed however I am not sure, been a while since I've sent a transaction with RBF not enabled.