If you are close to your relatives and have the time and budget to attend their wedding, it is a good choice to attend the wedding. Attending the wedding can express your blessing and support, and also provide an opportunity to celebrate the wedding with family and friends.

However, if you don't have a close relationship with this relative, or you don't have enough time or budget to attend the wedding, you can express your wishes in other ways, such as sending a blessing email or telephone congratulations.

No matter which way you choose, the most important thing is to respect the couple and their decisions, and to observe wedding etiquette and traditions.