The Bride and Groom
1. Arranging the chuppah is one of the most important mitzvot instituted by our Sages. The bride and groom should receive every possible assistance in fulfilling it. This involves more than financial support or organizational matters. We need to create a wedding atmosphere and do everything to bring joy to the newlyweds.
Even those studying Torah should interrupt their studies to help with whatever is needed, since the more people participate in this mitzvah, the more significant it is considered.
According to one opinion, not only someone who witnesses the wedding ceremony firsthand must interrupt their studies, but also someone who hears about it from others (even if they are neither a relative nor a friend of either the bride or the groom). In large cities, where weddings take place almost every day, this requirement is not applied stringently, and students and teachers are not taken away from their studies, particularly at educational institutions (yeshivas and the like) with an established daily routine and study schedule. However, anyone who receives an invitation should make an effort to participate in the wedding ceremony.
2. One element of this mitzvah is to escort the bride from her father's home to the place where the wedding ceremony will take place. This is called hachnasat kallah. Today, women do this. Men can fulfill this mitzvah when everyone accompanies the groom to perform the ceremony of veiling the bride: upon approaching the bride, the groom checks that she is his bride and covers her face with a veil. There is also an opinion that this mitzvah is fulfilled when distinguished people walk toward the bride and, after approaching her, return to the place where the wedding ceremony will take place.
3. The Torah states that the Almighty Himself adorned Eve before bringing her to Adam. From this, the Sages learn that even an important, high-ranking person should help the bride and groom with everything they need and participate in the rejoicing.