Originally Posted by
izzik
I'm sure you realize that Oneworld sapphire will let you choose MCE on AA... so I'm guessing that you want the miles credited to AA for MIA-LHR ?
Separately, you can try to do the FFN switcheroo on day of travel but be warned that it's a royal hassle to undo points crediting with BA.
AA also frowns on using their status to get status-related perks, only to then switch to a non-AA status for accrual.
From
https://www.aa.com/i18n/travel-info/...abin-extra.jsp - AT sapphire doesn't get MCE
Who gets complimentary Main Cabin Extra seats?
- AAdvantage Executive Platinum®, AAdvantage Platinum Pro® and AAdvantage Platinum® members
- oneworld® Sapphire and Emerald members with elite status on Alaska Airlines, British Airways, Iberia, Finnair, Qatar Airways or Japan Airlines
I don't care about accrual, so the FFN switcheroo isn't what I'm looking for. Just wondering if people have been able to assign different FFNs to different segments at booking/far out for seat selection purposes.