The experiment proceeds! At 23:59 I went online to OLCI my 3 Leg itinerary for tomorrow (already 3 day out EUA'd on Leg 3) and said "yes" to the "Do you want to upgrade" question. When It told me I was put on the waiting list for Leg 1 and 2 I closed the window and will try again tomorrow morning. EF is showing P1 F1 on leg 1 and P0 F0 on leg 2 so I assume I have an outside shot at Leg 1 and no shot at Leg 2. I'll report back in the morning in case anyone is interested in how this progresses.