Also, to add to the mix, the USPS contracts with Amazon to deliver Amazon packages on Sundays. I know because my son works some Sundays and he's a postal carrier. I asked him how he was working a Sunday and he says, "We're delivering for Amazon".
I got a package on easter sunday. I asked the guy delivering what the deal was. He said all he was doing was delivering amazon packages. I was like really, on easter? I couldn't believe it.