I just know this topic has been covered somehwere, and Upgrade Me will be the first to point it out, but here goes:

My wife and I are both Plats. We have a flight tomorrow in seperate record locators. She was upgraded 5 days ago, I was not (the gaul of that airline!). ITN shows P5 F0. Should I check in online for a better chance at snagging a seat up front, or am I better off waiting to see if the seats just open is on EUA? Will EUA automatically upgrade me if I am already checked in? My experience when this has happened in the past is that I typically get upgraded a day or two or three before the flight. I am now less than 24 hours and have not been in this terriroty before. Advice (besides performing a search for exactly this issue)?