I just checked a few others. Primo Piatto, Roaring Fork, Artist's Pallete, Geyser Point, all stay open until 11. Even the BC Marketplace says it stays open until 11. I wonder if
@HyperspaceMountainPilot's comment is specific to the BC Marketplace because I know the setup there is the giftshop/QS hybrid sort of space that, as I recall, doesn't have any seating or tables (like a full QS such as Primo Piatto or Roaring Fork). I wonder if they tend to shut the kitchens down well before the official 11 pm closing time.