Nikaah & Marriage Issues

Q: Is having pre nikah functions found in shariah? We have heard one aalim saying e.g. engagements etc are permissible in principle if no intermingling dancing or exchanging of rings takes place.

Q: The act of masturbation is defined as rubbing ones private parts to reach climax and this is not allowed in Islam. Now my question is, is it wrong if a person without touching his privates reaches climax, for example, bouncing on ones bed facing towards the roof with the intention of climaxing yet not touching the genitals. Would this be termed as 'masturbation' and is it wrong Islamically?

Q: Is it permissible for a husband and wife to not have their satar completely covered for each other in the privacy of their home or bedroom? For example the wife dresses up for her husband at home and in doing so maybe part of her satar is not covered and vice versa man does for his wife?

Q: Please write for me the authentic sunnats of the wedding night.

Q: I have lot of waswasas regarding hurmat-e-musaharah. According to the hanafi madhab what does desire mean in the case of women? I have read somewhere that desire in the case of women means very strong inclination of the heart that it clouds one's thoughts.

Q: Is it gunaah if I gave my property to 2 of my children an not the other 2?

Q: I'd like to know regarding the harms of mastabation and watching pornography. Please kindly provide Ahadith of the Prophet صلّى الله عليه وسلم.