The last time that I shopped at Woolworths I realised that you were able to edit your order until a few hours before collection. It's super handy and a great feature.
I was thinking about doing an order today of a load of special offers, of which none are urgent. Has anyone tried to set a delivery or collection date a few days in to the future (Wednesday onwards) so that you can edit your basket once the new offers come in on a Wednesday? It would effectively mean that you could get two different weeks of specials in a single order and save on delivery. However, my only worry is whether editing the basket would change the price of the items already in the basket if they were no longer on offer.
Edit: One way around the two trips to the supermarket would be to buy stuff on a Tuesday for a Wednesday pick up and that way all of the new specials are on when you pick up.