Originally Posted by
cmd320
Well, it's certainly better than zero. The only thing is, I don't think you will retain your upgrade timestamp if you do that. What does the MCE cabin look like? If it's empty, then yeah, you'll probably have a decent shot. If it's full, then you might have a problem.
Anytime you change flights, SWU time-stamp re-sets. Sticker upgrades do retain the original time-stamp as long as changes are done in the same pnr.