the crew will most likely put the tray tables down on the emegency exit seats so pax cannot sit in them..and the dispatcher should have a manifest for the crew who has paid for them and who hasnt at check in to resolve any disputes onboard!...problem solved! myself i would prefer the over wing exits as row 1 is practcally in the galley and 1A isnt xleg due to the slide...crew also dont like pax sitting in row1 as you are practically sitting in each others lap during take off and landing!
