Is it permissible for a woman who wears the niqab to remove it on her wedding night in a hall attended only by family, then put it back on?

If the wedding party is attended by non-mahram (definition) men, it is not permissible to unveil the adorned face in front of them, whether they are relatives or not. However, if the party is exclusively for women, there is no harm in unveiling the face and what does not need to be covered from other women. Regardless of the situation, if the face is unveiled in a specific place or time, this does not preclude covering it elsewhere, based on the Almighty’s saying: "So fear Allah as much as you are able," and "What cannot be achieved in its entirety should not be abandoned in its entirety."