Debbie, not everyone who orders from Disney Travel is staying at a DL hotel. I know we're staying at HOJO but got our tickets through WDT. I was thrilled to get our actual tickets in the mail, and not a voucher we have to go exchange for the tickets. Because there are so many good neighbor hotels at DL, I imagine it's easier just to send thing out rather than trying to get the right documents/tickets to the individual hotels.
As I said, UPS did call me many times to let me know I was getting a package and it required a signature. The call said that if I was not available on the first delivery, they would give me options for rescheduling. I often have to do this because UPS refuses to leave packages on my porch. You can have it delivered to another address, arrange for delivery on a day you know you will be home, or arrange to pick it up from UPS. As to why they require a signature... I'm glad they did. I had over $1000 in tickets in that very small package. I would not have been happy if they had left it on the porch.