Quick note, but I suspect that Raqio's Small Talk quote on food about supplements could be the reason why they never appear in the cafeteria: they straight up never eat actual food, and probably would consider going there a waste of time (except for that one event). Even in the NE, they seem somewhat upset when Comet suggests they do so. Everyone hates Sha-Ming, it seems. Private room stuff is messy as hell too. I kinda assume that the actual room we go to in these cases is either the MC's room, or Room 2, even if stated otherwise, lol.