joining a family

You just have keep telling yourself that you are marrying HIM - not his family- And as long as HE does not expect your to be a housewife or take him across the country- you can not make yourself crazy worrying about what THEY expect of you -
You have to make your fiancee happy- and that is all !
Good Luck !!
(And I know what you're getting yourself into, I'm Italian- but my fiancee is Irish/German- TOTALLY different family)