I don't yet have mine from the Ducat King presale. The receipt says:
"FedEx 3 Day orders will be shipped 2-3 weeks before the show date (NOT the day the tickets are ordered) and will arrive in 3 business days after they are shipped. FedEx does not deliver to PO boxes. You will be emailed a tracking number when the tickets are shipped."
Theres lots of time, and if somethign happens they will even call you up. It happened to me before, they called me a few days after I made a purchase to confirm my card info. And you will speak to a real person not go through 23498742 different menus on an automated phone system to then finally speak to somebody.... Oh and Ducatking is based here in L.A. fyi..
I also ordered on the presale and did not recieve but I did get the ticketmaster tickets that I ordered later. I took it as a good sign that Coachella sent the codes for the community and the free spin subscription for both orders.