Everyone else seems to have everything covered but just one other thing.... do you have plenty of wash cloths/face washers? We only had 4 when our first was born and DH had to do a shop and bought some more.

And yes nappy sacks or stink pretty bags are for the used nappies so your bin doesn't stink as much.

Good luck with everything I'm sure you'll be fine. As for grocery shopping, can you get it delivered from your local Coles or Woolworths. They do charge a small fee for delivery but I've found them invaluable in the early days as sleep for you and bub is vital without having to worry about groceries.