Even if you don't receive your luggage tags and DME info booklet (which contains your bus vouchers), NEVER FEAR! You can STILL have your luggage automatically delivered to your resort room.
Disney has had this procedure in place since Day One. When you land at Orlando, skip baggage claim and go right to the DME Welcome Center. Part of their procedure is to ask if you used the DME tags for your checked luggage. When you tell them "No," they will ask for your baggage claim ticket numbers as well as a physical description of each bag (using a photo array to identify them). They will dispatch a CM to go to baggage claim and claim your bags for you; the CM will take them back behind the scenes with the rest of the DME luggage, which will be transported to the resorts via trucks.