There was nothing extra involved for us. We used a known donor who shipped to
us. We are in VA and were/are married. My wife went directly on our daughter's birth certificate and is her legal parent. We can still do a stepparent adoption if we feel the need to, but currently do not plan to.
We used NW to conceive our now 6 year old son. Marriage was not legally at that time, so my wife was not able to go on his birth certificate at birth. Once it became legal, we got married and completed a stepparent adoption. We just needed the receipt from our vial purchase, along with the form the donor signs terminating rights (just the form, no signatures)...both of which NW will email you. The adoption itself was easy/simple, but we did use an attorney just to be sure everything was done correctly.
Mom to P (13), J (11), E (6), and Q (born December 2017)