From what I recall, Evergreen, Douglas, and Birch all made the upgrades requested by Marriott and remain with Marriott. Cedar made the upgrades, but Marriott gave them the boot for some reason. Aspen told Marriott to take a hike, saying the cost to stay a Marriott was not worth it to a majority of owners, but then had some substantial special assessments.
Each building has its own HOA, but they share common facilities like the pool.