In central asia a casino started bonus payment to
any 6-7-8 or 7-7-7 3times
same suit 6-7-8 or 7-7-7 5times
5 card (or over)21 5 times (and goes on playing as normal).Bonuses are paid immediately what ever the dealer has.
6d-SO17-DOA-Double after split-no hole card.
I d like to know that playing only basic strategy gives an edge to player or not?And what makes the house advantage?

Thanks.