I agree with RChavez. I have personally witnessed several very heated arguments at gate areas where customers "who have spent 120,000 miles" for an upgrade are left standing while elites are given seats. This is particularly likely to happen on domestic segments to gateways for international flights, such as IAH to EWR. Those who used miles and who got into first class were the ones that scremed the loudest. Its best to call CO immediately after the A to F dump and before the final EUA wins.