Bought a 3DO off of ebay once with a bunch of complete in box games, box arrived shredded, console loosely inside, everything else had fallen out. The packing tape was left hanging loosely around the box and was clearly used as a handle to lug what was left of it around:
USPS just dumped it on my doorstep and didn't bother ringing the doorbell. No apology when I took it to the branch, they claimed that it was shipped with the box in that condition... like they would actually accept a package that was completely torn open at the point of origin. Give me a break.
Anyway, I don't think I had to sign for my consoles from Amazon but I don't strictly remember. Taco Bell PS4s needed to be signed for. I do prefer it that way. But, I work from home, and have a window where I can easily catch FedEx and UPS trucks coming, so I almost always intercept them and eliminate the possibility of it being stolen off my front doorstep.
In my experience USPS has been the worst as far as actually getting my stuff or in decent condition, UPS has been better but still not perfect, and I don't think I've ever had a problem with FedEx, of course your mileage may very.
I hope your box shows up unharmed.