Moving into the House?

[Owlette]

Hi ladies!
I'm new here. I just had a question, and pardon me if this is in the wrong location:
I'm a new member of my sorority. I'll be moving into the house next semester. Yay! However, I'm kind of worried about the atmosphere in the house. After all, I'm moving in with a bunch of girls that I hardly know. I've barely gotten to know the girls in my NM class (I'm pretty quiet) and I don't know any of the sisters well at all, including my big.
Is it common to get to know the girls in the sorority better once one moves in and such? Or, am I up a creek without a paddle? Or, am I just freaking out over nothing? Has anyone else been in a kind of similar situation?
Thanks for any advice you can offer!