Atlantic City Blackjack Rules

I noticed that the basic strategy tables differ only for pairs of 2 to 6 of the. He says it's because of different house rules. Does anyone know what the differences in the rules actually are.?

Link would be apreciated.

Thank you!

Most casinos in Las Vegas, dealers hit on a soft 17 (A6, A42, A33, etc etc) which really gives the house a greater advantage
Therefore, the strategy changes

not sure
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