I made one order through Amazon groceries (not Whole Foods). The GPS delivery map showed a local location within a few miles which was not an Amazon warehouse location.
Not a clue. You can try asking Amazon's customer support agents. We don't use it unless we really need something same day, which is rarely the case. It's a fairly cool service, though. I last used it a year ago maybe to emergency order some cabling that had gotten damaged overtime and by that I mean I tugged at it too hard and severed the internal connections.
I guess things happen.
It used to be I could go to a large tech store and find cables the same day but said store went on a downward decline the last decade and I'd be lucky to find lint newer than 2010 now in said stores.