I think to clarify your point, curbside pickup is the curb of the store/warehouse, not the curb of your house, correct? I think the netizen above thought it was your house's curbside?
That's correct, with curbside pickup you drive to the store, pop open your trunk, and in principle someone from the store's staff is ready and waiting to verify your identity and then load your pre-staged shopping right into your trunk, and you drive off.
So you still have to go to the store but it can be an in-and-out if everything works.
