I was going to test this tomorrow, but as a new Gold the 3 day upgrade threw me a little. I was upgraded 3 days out on the third leg (the longest, thankfully) of an itinerary but not the first two. I'm wondering if I risk losing that F seat on the 3rd flight if I OLCI at 23:59, answer "yes I want to upgrade" and then if not upgraded close out the OLCI and then OLCI the morning of the flight.

Does anyone have any experience with this type of a situation? How best does one deal with multiple segments on an itinerary when one is 3-Day EUA'd , and the other two are not?