Originally Posted by
rylan
Yeah, technically miles upgrades need to clear 24hrs in advance... however as mentioned it is possible for a GA to pull miles at the gate if they know how and you explain the situation.
Other question, was your wife listed on the waitlist in her itinerary for the Z upgrade? Seems odd that with 9 seats open there wouldn't be any Z upgrade inventory available a day or two before the flight.
Couldn't @delta_assist do this also?