A clear explanation of the routine can spare someone a month of careful guessing.

Newcomers spend enormous energy on questions nobody thinks to answer. When do people eat, is the door meant to be locked, who do you ask about the heating. None of it is secret, all of it is invisible to whoever already knows, and the guessing is tiring in a way that never shows from outside.

When someone joins anything of yours, give ten minutes to the ordinary rhythm before the important information. Say the unglamorous parts out loud, then invite the questions they have not dared ask.