I have a few questions that have experience with AA elite/OneWorld status when flying BA: I have Platinum status with AA [translating to Sapphire status with OneWorld], but no elite status with BA Executive Club. I'm wanting to earn Avios for flying CDG-LHR, so I plan on entering my BA Executive Club number when purchasing my ticket. However since I have status with OW, would I need to show my AA elite card to BA check-in staff at CDG to gain entry to the priority check-in? Finally, if I added my AAdvantage number instead of Avios number to my BA booking, would I get access to seat assignments for free like BA's elites do? Regarding luggage allowances, I'm aware that hand-luggage only fares exclude baggage for all elites; are only Executive Platinums/ OneWorld Emerald allowed 2 free bags for intra-European flights [on fares that don't say "Hand Luggage only"] or do AA Platinum members/OneWorld Emerald members also qualify for 2 free checked bags on intra-European flights? I ask because I see conflicting information on BA's site and OneWorld's site.