I am trying to book 4 round trip tickets from DCA to SEA in June with Advantage points. I can find first/business class tix for 25K when I try to reserve 2 but not 4. If I try to reserve 2 from my account and 2 from my wife’s account at the same time, the flights disappear for whichever account processes the reservation last. I don’t think it is an issue of not having enough seats as they all look empty. Is there any way around this? I can book 4 together in coach for 30K each (more expensive than first class).