I am flying to Tahiti on my honeymoon: JFK TO LAX on Qantas run by AA and then LAX to Papeete, Tahiti, Qantas run by Air Tahiti Nui. IS there anyway to use my Delta skymiles or transfer them somehow to upgrade us to first on either of these flights? I am Silver Elite and from what I could see, Air Tahiti Nui is part of Skymiles. Thanks!