Something happened there that surprised me.
 VeAhabta LeReacha Camocha
 the obligation of hearing Kiddush
 unnecessarily delaying a mitzvah
 Torah law obligates guests to obey their hosts
When the father or host is singing [a zemer], the best Derech Eretz is for the children and guests to help him sing by singing along with him.
www.ActForAmerica.org * www.aish.com * www.IsraelLawCenter.org