Passing through a Wedding Hall during the Year of Mourning

A mourner within the year of his mother's passing wishes to attend a neighbor's chuppah and return home afterward. The chuppah is held on the hall's balcony, requiring passage through the hall. Is it forbidden to pass through the wedding hall for the chuppah on the balcony?

Since he passes through before the wedding and the chuppah is held outside the hall, there is no prohibition in this matter.

The Tur in Siman 391 writes: "And Rabbi Yehuda Albarceloni also wrote that some enter within twelve months to the chuppah to hear the blessing or to visit, but not to eat. There are those who are stringent and do not enter at all. The Ramban wrote that it is forbidden to enter there at all, whether during eating or during the festivities of the bride and groom. So wrote the Rosh, and so is the custom in Ashkenaz, that all twelve months they stand outside the house to hear the blessings and do not enter the house at all." The Shulchan Aruch ruled to prohibit, and the Rema wrote: "And all this is in the house where the wedding is held, where they eat, drink, and rejoice, but at the chuppah held in the synagogue, where the blessing of betrothal and marriage is recited and there is no joy, it is permitted immediately after seven (Hagahot Maimoni). Some prohibit until thirty (there in the name of the Ravia), and this seems correct to me." Therefore, inside the hall is forbidden, but outside the hall is permitted. From the Ramban's words, who wrote: "that it is forbidden to enter there at all, whether during eating or during the festivities of the bride and groom," it seems that before the wedding, even if the excitement before the wedding is felt, there is no prohibition to enter through there.