Still waiting for the Good Guys 10% discount code to pop up on your screen? Just close your browser and get it off Amazon instead. You can also get 5-6% on CR/Shopback making it pretty much the same price as the TGG deal ($1225.61 after 5%/$58.36, $1213.94 after 6%/$70.03).
It's still the pre-order period so you'll get the Galaxy Buds.
If you pre-ordered from Amazon at the full $1349 price, you should be getting a refund for the difference in the next 24-72 hours.
If you don't want the buds, you might as well buy it off eBay. They're out of 128GB models though.
Part of the Galaxy S10 Series + Bonus Galaxy Buds Pre Order Deal
Yes it's meant to be automatic. Best to contact them to confirm? Mine's on board for delivery today.. looks like they jumped the gun a bit!