Originally Posted by
MADPhil
If PE is full and there are open seats in J then they will probably bump someone up to make space but it may well not be you. There would not be a fee if someone is bumped up for AA's convenience but there may well be people who have requested upgrades and will pay for them. You will probably get a PE seat but it will be a matter of luck which one.
thanks for the insight Phil! Much appreciated.