All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger. We ask Allaah to exalt his mention as well as that of his family and all his companions.
First of all we congratulate you and your daughter about the Blessing of Allaah on both of you as He enabled you and guided you to embrace Islam. We ask Him to help you stay firm on this religion.
As regards holding the marriage ceremony on this day which coincides with Christmas, there is no harm in this, Insha Allaah, as long as this day is not purposefully chosen to glorify it or to participate in the celebration of this day by the Christians. We draw your attention and the attention of your daughter to be keen on acquiring religious knowledge and keeping in touch with Islamic organizations and centres. You should also keep company with the pious Muslim women who would help you in performing righteous actions and good deeds.
As regards your second question, please refer to Fatwa: 81343.
Allaah knows best.