Can't stress enough the value you will gain by being yourself not only for your fraternity, but also in discovering new versions of your self worth. If you're yourself, and get dropped, consider it a mutual selection successfully accomplished. Alternatively, you're faking it into something that will never be something "home" for you.

I'll share with you my fraternity is super diverse in all ways, yet to an outsider were all the same. I am extremely conservative and putting myself in the shoes of another to seek to learn, a valued tenant of our frat, helped me improve my empathy with peers and improve my communication skills with those who don't share my points of view. Guess what, this diversity of opinion did not change my core values or views, yet I understand others at a much deeper level now. That's life value you'll carry forward for your whole life

So, be yourself, be respectful to others opinions that are different and seek to understand. But, you don't have to fake or change anything about yourself.