UPS is probably the worst postal service. The jackass was too damn lazy to bring up my bike up the stairs, so he just left the sticker on my door; Didn't even ring the doorbell.
Delivery is a fast paced business. They will have worked this out with the company they are delivering for, and the rates are adjusted according to everything needed. UPS does the delivery for Amazon where I am right now and that is their standard procedure, just leave it at the door.