Only one item can be delivered at a time. It can’t weigh more than 5 pounds. It can’t be too big. It can’t be something breakable, since the drone drops it from 12 feet. The drones can’t fly when it is too hot or too windy or too rainy.
You need to be home to put out the landing target and to make sure that a porch pirate doesn’t make off with your item or that it doesn’t roll into the street (which happened once to Lord and Silverman). But your car can’t be in the driveway. Letting the drone land in the backyard would avoid some of these problems, but not if there are trees.
Amazon has also warned customers that drone delivery is unavailable during periods of high demand for drone delivery.
See also: Royal Mail in the UK experimenting with drones. Not doing the last miles delivery to customers, but reinforcing the network with a human still actually shoving the damp bits of paper through the door.
Interesting. That's dealing with deliveries over water though, where you can't get a truck to simply distribute stuff efficiently
It carries the mail carrier over the water so they can put the mail in the slot?
Excellent.