i know losts of wittnesses that have off those days and extend thier 'vacation' and go home to see family, the thing is no one knows, becasue its no ones buisness. its a conscience thing . no one askes if you dont tell them your day to day buisness.
it might come up later , in conversation, that 'so n so' went on vacation because they had off work. down in south carolina apparently the congregations down there are vry secretive, a sister from up here in pa, moved there a few years ago, after her husband retired and she was telling my mom [who goes to her old hall], that its so strange in south carolina, people dont even tell you that anyone is sick! if she asks how someone husband or wife is doing they say fine and change the subject, which for the jws up here because there is gossip all the time, but good gossip mostly to help people out, but also bad of course.
so , you know, you dont need to tell anyone anything. if you dont show up for meeting no one should ask some one why werent there.
and btw i dont know what a ubm is. unbaptised man? lol.