Does BeRov 'Am Hadrath Melech (the King's glory is in the multitudes, ie., the more people praise HaShem together, the more glorious it is for Him) apply to making Kiddush? I've heard it said so ...
Some people, although listening to another's kidush (Friday night), sing part of it along with him: specifically (in my experience), the lines starting "ki vanu vacharta" when recited with this tune. ...
When making Kiddush, does everyone who is yotzei have to drink the wine or grape juice, or is merely hearing it enough? In my experience, it appears that Friday nights everyone is careful to drink, ...
Is it okay to say kiddush or havdalah twice in order to be Motzi someone else (e.g. wife)?