If the goodies are vouchers for priority seating, discounts for DTD, and are they still doing the "dream coin"?, those things will be in the packet you get.
The lanyard and pin, if those are other goodies for your package, will be "given" to you in form of a voucher, with a list of places you can redeem it. If this is something you get, you'll get a WDTC lanyard with a generic pin (that you can immediately trade with the CM that redeems your voucher, if you wish...hubby traded his, but DS and I kept ours).
If there's something else I didn't mention, let us know and someone will try to tell you how you'll get it.
As mentioned, they send the package shortly after the date for payment in full. It's not after you pay in full since you could pay in full forever before the due date, but after the date you're supposed to (if you do indeed pay, of course), so it generally does arrive about 3 weeks before the trip.