Question
Some Poskim permit a Chamar Medina to be used on Passover if one can’t obtain wine for the four cups. According to the view it is a mitvzah to drink the fifth (I Believe from the Ran and maybe the Rambam), can a Chamar Medina be used for that as well? What about the view one doesn’t drink it but puts it for Eliyahu

Question
A relative of my wife is getting married toward the end of July. We looked on the calendar and realized this is during the three weeks. What we found out is they are Sefardi, and the Sefardi custom is that weddings may be held during the three weeks before the nine days begin. We are Ashkenazim. What do we do about this? Can we attend the wedding?

Question
Is lag b’Omer an actual Halacha chiyuv, or minhag? Is it permitted to fast or no on that day? If it falls out motzai Shabbat, is besamim not used due to neshama yesira?