Originally posted by: ..RamKiJanaki..
Queens (mothers of sons) did not attend weddings in the treta yuga. This was not a ritual that just Ayodhya followed, but all of Aryavrat. SKR wrongly pointed this out as a difference in Ayodhya's customs. If Raja Janak had a son, Sunaina wouldn't have attended the wedding in the princess's kingdom.
The reason behind this custom is that the queens' main role in all the wedding festivities was to welcome the bride on her return home. They would take care of all the arrangements at their own home, and once they welcomed the bride, other post-wedding rituals would follow which they were in charge of.
The role of women in weddings was different. While a princess was still in her natal home, it was the duty of the mother of the bride to oversee all the wedding arrangements, and after the wedding, it was the role of the mother of the groom to take over. This symbolized the transition of a woman from maiden to wife.
Mother of bride was required to be in the wedding, as she and the father both performed kanya daan, but mother of groom has no role in wedding rituals so she was busy preparing for the bride's welcome party back home. This was not something she could delegate to others, as this was her job and it was considered auspicious for mother of groom, who was like Lakshmi of the home, to welcome the new Lakshmi into the family.
Not all rituals are "ridiculous". We may not like them, but they do have a reason and it's important to understand the reason without cribbing and complaining. Of course, today it's different but lifestyle in the Vedic era was very different and we have to understand that.