I was adopted by my parents when I was a baby, I know I have an open adoption. I am turning 18 soon. Legally does anything happen?
No. If it was an open adoption, the bio parents have the choice of contacting you or not.
Your parents are your parents. Just like if you are their biological child. Some parents think they are done at 18. Others will pay for school and stuff.
Nothing regarding adoption changes.
No, not at all. They're still legally your parents if thats what you mean.
legally you become an adult and can do everything except buy alcohol.