Can you summarize this please?

Shaadi: A granthi or the holy man is usually in charge of the marriage ceremony. The ceremony begins with an explanation of the importance of marriage. The couple then show they agree to be married by bowing to the Guru Granth Sahib. Then the bride's father ties the bride's chunni to the groom's scarf to symbolise her departure from the bride's family to join the groom's family. A marriage hymn of four verses, the 'Lavan, written by the Sikh teacher Guru Ram Das, is then sung. To symbolise their support, the relatives help the bridal couple to walk around the Guru Granth Sahib after each verse of the hymn has been sung. The couple is declared married at the completion of the fourth round. Throughout the ceremony, hymns are sung and prayers are said for the future happiness of the newly-weds. The hidaayat or niyams - their duties and responsibilities towards each other as man and wife, and also towards their elders - are now recited to the couple. Final prayers are then said and sweets, Karah parshad, made from flour and sugar, are distributed to the people present to seek God's blessings for the new couple. Relatives and friends garland the newly-wedded couple and present gifts. A meal follows, either at the Gurdwara if the ceremony has taken place there, or at the bride's house.