If you have attended weddings, you might be asked if you were on the bride’s side or the groom’s side. Nowadays, the open seat policy is becoming popular at the wedding. The exception will be the first few rows. Usually the few rows are reserved for close family members.
The seating of parents varies. At Christian weddings, the bride’s mother is the last person to be seated and she sits in the first seat in the front row, on the left side of the aisle. The seat next to her is left for the bride’s father after he walk his daughter down the aisle. In Jewish weddings, usually parents from both sides stand under the chuppah with the couple.