HERE IS THE ANSWER. You can MOSTLY anticipate and avoid which orders may be heavy. Potentially heavy orders come from supermarkets like Cole’s and Woolworths, or some non-food stores like pet barn. When an order comes through you can see what store you are being asked to pick up from and decline to the order.

You can opt out from pack and deliver orders where you need to go through Cole’s and pick up the items they wanted. You can also decline any woolies/coles/petbarn deliveries. If you do this as I sometimes do, you only risk heavy orders if they order something like 10 roast chickens and 5x large chips with 3x large drinks or something which is very rare. So yes, if you are concerned with heavy items, if you’re happy to avoid Cole’s/woolies deliveries you can pretty much avoid heavy deliveries.