I'm so sorry partner, I'm having the most gosh awful luck with my PO. This is the 4th (3 from swaps!) pony to be delayed/gone missing. Tracking had D-date as the 1st, now it's changed to the 10th. I didn't know they could do that on express delivery.
I hope and pray to the Deity of the PO that the pony is actually delivered by then.