I think you should really think about what you want in this scenario. I have no experience of being with people, long-term, from different cultures - I did experience sexual interactions with men from other cultures when I was younger, but it was basically being intimate and satisfying both our needs. Therefore, I'm probably not knowledgeable enough to give you advice.
What I will say is that I'm a gay man and that obviously came with potential barriers when I've met partner's family in the past. Unfortunately, not every family is supportive of gay relationships.
I've been with my dp for 22 years. His mother was a very devout Irish Catholic. He never shielded us from each other and she welcomed me into her family with open arms. She was able to overlook what her religion said about same sex relationships and treated me the same as her other son's partners. She was an amazing human.
If my dp had kept me out of his family's life, giving me excuse after excuse about why we couldn't meet, saying 'oh, we'll need to avoid such and such a place because my cousin might see us', we would not be together right now because that is a life I would not want for myself.
I don't believe people should change to be accepted into any family, and I certainly don't think a partner should perpetuate that by being dishonest with both their partner and their family.
All the best OP. You sound like a very level headed individual and I hope you never change yourself or your style for another person, or their family.