I called Sprint store to make 100% sure that they wouldn't just sell all of the EVO 3D's to every Tom Dick and Harry that asked for one before fulfilling my pre-order.
They told me to just show up any time during the day and show a salesman my pre-order slip and gift card and I should be fine.
Translated intoto non-Sprint speak that means, "Get here the second we open because we will definitely sell your phone to someone else no questions asked!" Then after they completely screw you they will put on their most smug face and tell you, "I completely understand your frustration sir, however, we sold all the phones already so buh bye..."