Sunnats of nikaah

Q: What is the sunnah method and dua'a for the father to read for the daughter before the daughter leaves the home (in marriage)? Is there anything regarding the sprinkling of water on the daughter's forehead by the father? Furthermore, is the dua'a read by the father, the same dua'a the husband should read for his wife?

Q: I am soon to be married, insha-Allah. I want to know how to perform the wedding in accordance to the sunnah.

1. What is the sunnah mahr and the amount in South African Rands?

2. What is the Shar'ee status of having a wedding and calling people?

3. When is the sunnat time for having the walimah? Does khalwah (in referance to the walimah) refer to seclusion only or does one have to have intercourse?