“For these deliveries, the drone will fly to the designated delivery location, descend to the customer’s backyard, and hover at a safe height. It will then safely release the package and rise back up to altitude.”
(I reallly do hope it wasn’t fragile !)
So . . . what items would you really (really, really) want delivered . . . absolutely any other way ?
Back earlier in my career when I had to do a lot of the grunt work organising workplace events with a large number of guests from partner organisations and suppliers, etc. there was a time the day before an event of 200+ people where we (read, I) realised we were short several supplies that were easily orderable on Amazon but would be cutting it close to get an overnight delivery. I could definitely have used a same day drone delivery for something like that.
Okay, I’ll start the ball rolling . . .
This drone delivery process isn’t a million miles away from what our Amazon delivery driver does, with whatever instructions given, drives to designated site, hovers parcel over backyard fence to a safe height(?), then releases said package to nestle nicely on the concrete floor 
.
a parachute ???
I’d want all the parts for this delivered … Amazon throw in a free drone with your subsequent delivery 
They can drop Amazons in my back yard anytime. 
(They do look a little mardy, mind. 
)
Based on some Amazon deliveries I’ve had ‘dropped’ is literally what will happen.