I think it's better to do it at the woman's house first, because the woman is going to marry into your house, and the number of times she may go home in the future will be very small. As for the precautions, she can do it according to her own customs, because the customs in each place are different and the precautions are different. You can ask the older generation, because marriage is not only the combination of two people, but also the combination of two families, so it will be better to follow the customs of the older generation!