Come January 1, 2024, it’s going to get a lot harder to obtain Delta elite status and access the airline’s proprietary Sky Club lounges. In a major overhaul to its SkyMiles program, Delta will be moving to a single metric, Medallion Qualification Dollars (MQDs), as the basis for earning status. (Spoiler: major spending will be the sole method for achieving elite status.) Around the same time, the airline will begin to limit entry to Sky Club lounges, turning away Delta SkyMiles Platinum cardholders as well as those flying on Basic Economy fares; later, new restrictions will take effect for AmEx Platinum and Delta SkyMiles Reserve cardholders. Here’s all you need to know about the upcoming changes as Delta doomsday approaches.