That’s what I found too, but agents are sticking to their guns even when I asked about it. Just had a group show up for the 1:30am flight and they said they won’t check them in until 10:30. I’d be super annoyed - it seems like all pre-security restaurants are closed, and presumably all past security will be closed by the time they get through.

A throng of hAApy people waiting in the checkin area.