If the venues for men and women will be totally separate at a walimah, will it be permissible to attend?

Answer

If the venues are totally separate, that is, not in the same building, then ordinary persons may attend. However, the Ulama should not attend because their presence will be a licence for permissibility of inviting females to a function which the Fuqaha have centuries ago declared impermissible. Even in Beheshti Zewer and in all Fataawa kutub it is clearly mentioned that women should not attend walimahs.