Quick heads up that JMK (Mykonos) now has a lounge. It's small but very nice - decent food and drink from Nammos (swanky beach bar on the island), modern design and lots of power sockets. MUCH better than hanging around the decrepit terminal building.
It's in the domestic terminal building, and is on Priority Pass:
https://www.prioritypass.com/en/Loun...ing-CIP-Lounge