Just flew out of DME today. I'm an AAdvantage ExPlat, so OW Emerald.
Received an invitation to the lounge for me + guest. The lounge is nice, if hot. Around 11am on a weekday, it was packed with pax waiting to depart. It cleared up at noon.
Food is free and a nice spread that changed from breakfast to lunch. There are self-serve free coffee machines and a pay one behind the bar. Plenty of Russian language press but nothing in English. Oh, and wifi requires a phone number to register