FWIW I've been getting benefits similar to a SkyTeam Elite Plus on AR flights for the last few months, even after dropping from Platinum to Silver in March. Boarding passes print with 'PRIORITY', but do say 'Elite' as opposed to 'Elite Plus'. I've had about 4 or 5 flights out of AEP and flights out of MDZ, FTE, and BRC and I've checked in at the elite/Club Economy line every time with no problem. They also have put priority tags on my bags every time, although you have to prompt them to do it most of the time. Only on rare occasions do the bags actually come out ahead of non-priority bags, but it's worth a shot. I've also been able to pre-board with elites and Club Economy for all flights. I'm flying to EZE-BOG on AR in a couple weeks so I'll see if they give me SkyPriority treatment or a lounge pass.