This $5 bonus is on top of the regular 2.5% cashback, so you will get 5% off in total ($200 gift card for $190). Use this at ALDI, where regular discount is basically non existent, opposed to Coles/Woolworths where you can get similar/better discounts from Prezzee etc.
Capped at 1,000 redemptions or 6 days (whatever comes first), you must pay with your Westpac card.
how to use digital credit card at ALDI?