Originally Posted by ssullivan

I do the opposite -- check in right at 24 hours if I haven't been upgraded, to try and get as high on the first class standby list as possible. Generally I've had decent luck with this, with the three hour EUA run giving me the upgrade, or getting it at the gate at the airport. I've also missed very few upgrades this year, and most of the flights where I've missed the upgrade, F was sold out before the Platinum EUA period opened.