Large Facilities VS. Small

I accepted a position at a large facility 200 plus beds. I come from a very small facility..under 40 beds. I am very nervous about going to such a large place and I can't pinpoint what is freaking me out about it. Actually, I think everything is freaking me out. One thing I am actually looking forward too...(well I hope anyway) Is sort of just doing my job and going home. At a small facility there is so much of everyone knowing everyones business. I don't want to come off snobby or unfriendly, but just kind of friendly and professional if that makes sense?
Any good things about a large facility? It's not a coperation, it's family owned...if that helps