Don't you get Sky Club access with Amex Plat when flying Delta?HariOm is correct. There is a priority pass lounge (since you have AM PL), but that is in Concourse A (International)--so same problem. If your travel is entirely domestic on Delta, even in first or business class, you’ll need a Sky Club membership.
Update: AX Platinum did get us free access. It was Ok. Wouldn't have paid $29 each to use it. Had good breakfast in hotel and it was too early(at least for us) to drink but was quiet, could see the runway and charged my phoneHey, yes, I just found that. I rarely if ever fly Delta so it didn't occur to me. thanks!