For me it usually about timeliness (I don’t know if that’s a word but it makes sense to me) and if our drinks a nearing empty they ask if we would like another rather than having to spend five mins trying to flag some one done.

Simply doing the job quickly and professionally which for me makes my meal a little bit better. Also this is much more achievable for the staff if the restaurant has enough staff.

Signal messenger has a note to self function that can be opened on the phone and windows that will do text and small files