Participating & Attending Non-Muslims Wedding Event
As long as there is no immorality and no polytheistic rituals involved, the family, bride and groom all can participate in the cultural aspect of the wedding ceremony. Polytheistic rituals need to be avoided. Please refer to the following comments of Ghamidi Sahab from 20:50 to 25:15 https://youtu.be/N7kp3URB01g?si=S1G7TXnmNA61t3QZ&t=1250