My fiance's family is amazing. My FMIL was a very strict mom, and she has always butted heads with my fiance, but they are close now regardless. She's a very loving woman and will make such a great grandma.
I just got back from my shower in their state, and maybe I'm riding that high, but I feel so welcomed and just at peace around them. My own family is disorganized and fairly crazy (mostly in a friendly way, but still very in your face). I love them, but I just don't feel as much like I belong.