real question. my cousin got married within the year for her father. i know they all went and they were allowed to hear music but they were only allowed to dance for a very short amount of time. the girls were allowed a little longer because their sister was the kalla, but it was stricter for the boys because the chosson doesn’t really need his brothers-in-law to dance that much for him to be happy.
i think every rov will say different things but that was the psak they got.
dreadful wedding either way.