Blackjack with Triple-Down and other advantages

We have three different casinos offering the slightly more advantageous terms of Blackjack than usual:

Casino no 1 (In my Home town):

6-decks (3-deck penetration);
Dealer stands on soft 17;
Double any two cards;
Triple down any three cards (Except S21);
Late Surrender (Surrender after Split is not allowed, Surrender vs Ace is not allowed);
No peek;
BJ pays 3:2.

Casino no 2 (400 km distance)

6-decks (3-deck penetration);
Dealer stands on soft 17;
Double any two cards, Double any three cards;
Triple down any three cards, Triple down any four cards (Except S21);
Late Surrender (Surrender after Split is not allowed, Surrender vs Ace is not allowed);
No peek;
BJ pays 3:2.
Casino offers a discount Cashback of 20% after loses higher than $500 per calendar day.

Casino no 3 (400 km distance)

6-decks (3-deck penetration);
Dealer stands on soft 17;
Double any two cards;
Triple down any three cards (Except S21);
Late Surrender (Surrender after Split is not allowed, Surrender vs Ace is not allowed);
No peek;
BJ pays 3:2.
Suited BJ pays 2:1
Suited 678 Pays 2:1
Suited 777 Pays 2:1

I wondered if anyone could advise of the necessary changes of the basic strategy and house edges on each of the above mentioned occasions?

Thanks in advance

Lenus

I have already read the thread about a certain promotion with the triple (or quadruple down option), but there are moments that have never been touched there:

For instance,

If you double 10 vs Dealers 7, get the 2, should you triple down to get an extra card, or it is better to stand and save an extra bet? (I forgot to mention that there are no free cards after doubling, its either the third bet or no card).