Our of curiosity I just looked at the Luminae menu for our 15-day sailing on Millennium next April. It shows the menu out to day and for the remainder of the days, 9 -16 it shows "Venue Closed." Since we are so far away from that sailing, I will just assume that the menu will show up as we get closer to the sailing date.
The menu reflects the same for our November 2023 12 day sailing on Millie.