Are these physically active people or couch potatoes?
Are they close knit or just happen to share some DNA?
Is everything done as a group or does everyone do their own thing?
Are they important to each other?
Entering active families means you better be active. If they can sit in front of a T.V. for hours stuffing their faces, this is what you will find in your living room in twenty years.
If they are deep into each other, this means that either they accept you and make you part of their network or you will always be an outsider.
If they can forget about Uncle Harold because he voted Democrat or cut off cousin Debbie because she married outside of the religion, the person you are about to marry has the ability to cut you off too.