Quick question.
I'm an AA PLT. Usually been flying USAIR metal with my AA FF #. Usually I can upgrade for free within 24 hours by just selecting an open first class seat.
For my next trip I'm on AA metal and it doesn't seem to be the same upgrade process as USAIR. Do I have to use my 500 mile upgrade stickers whenever I want to upgrade? Are upgrades offered without using the stickers?
Thanks!