At the end of the day a dealer error is a dealer error and any mistake by the casino is fair game really. So when dealers make mistakes then it is not up to the player to correct them if that mistake involves the player gaining. There was one such dealer who was so bad at adding up the totals of hands that he was forever making mistakes and paying boxes that shouldn’t have been paid and taking bets that were stand offs or even winners.
One downside to having a poor dealer is that they do not get enough hands in and this can hurt the hourly rate of a card counter substantially. But this can be massively offset if you are being paid for hands that have not won. In poker then if a player is revealing their own cards then you have no duty to inform them. Many players do but it is not good etiquette to do that. As long as you are not trying to manipulate seeing your opponent’s cards then you have done nothing wrong.
It is the same with blackjack, if you have 17 and a dealer declares 17 with A,2,3,2 and calls your bet a stand off then that is their problem not yours. Leaving just one extra bet an hour or paying one extra bet is a huge shift in your edge over the dealer. This in effect is like giving someone a free bet per hour. If you are playing basic strategy then the casino edge is only 0.5% anyway. So if your average bet was say £20 and a slow dealer was only dealing 30 hands per hour then this means that your average hourly action would be £600 of which the casino took on average 0.5% of it or £3/hour.
But if this dealer is paying you for one bet that he shouldn’t be paying you per hour at £20 per time then you are in effect making £17/hour during his time at the table. I used to pick out such dealers which enabled you to make money playing blackjack without even counting cards.
