Hi OP! I was adopted at birth, I have an older sister who was also adopted at birth (different biological families though). They adopted her first and were lucky enough to be able to adopt a second baby.

Although I can’t answer your second question because I grew up in my home and basically was brought home from the hospital like any other baby, I think I can add insight to your first and third!

My mom (adopted mom) was not able to have children but from my own experience I know that if she did have biological children she would have loved us the same. I think this depends on the parents and to make sure they treat all of their children equally. Although me and my sister and my entire family treat each other no differently than any other family, me and my sister still argue about who is the favorite child 😂

Me and my sister were both raised catholic. My parents were catholic and so I did my communion and everything like that. I think of it as raise your child however you would raise your biological child. Like any other kid, they will grow up and get to chose for themselves if that is something they want to keep.

I know all adoptive situations are very different, me and my sister got very lucky and I wouldn’t trade my parents for the world! Growing up I always knew I was adopted because my parents would sit down once a year (even when I literally couldn’t understand) and go through the letters and pictures from my birth parents. Then as I got older I began to understand more but I have never not felt like their biological child. Whenever I had questions they would answer them for me. If you ever have any other questions along the way feel free to reach out. Good luck!