As a person who would like to build a blended happy family with the woman I love(HARD WORK) I can't answer that.
I guess patience, love and willingness to view another family culture as acceptable in my case is helpful.

I can't really say too much as we struggle ALOT. I often wonder if I'm doing the right thing even trying to blend families.

In the end if it feels right do it. I'm sure goodwill, honesty and love will be the key. For any familiy.