I have received all kinds of rewards from First Wealth Debit card-
1st bill payment from within thier idfc bank app (no minimum amount. I think even if u pay 100rs bill, you will still get 250 points. I paid 377 rupee bill and got 250 points.)
Got regular rewards for normal transactions
Got 8K rewards for first transaction from debit card.
I got these things for all 3 First wealth debit card in my family.