Most people do not know that most of my family has Hebrew linage. I have more Israelite in me than anything else, although I do have Spanish, Irish, English, and Indian in me also. My family and I do believe in Jesus Christ, not Judaism. Whenever I tell someone about my Jewish descendants, they instantly assume I mean that I believe in Judaism, which annoys me to no end. So, I stopped sharing that information with people.
I don't keep the feasts (although I have thought about it some...I tend to fall more on the Christian liberty side of things, but I do like the symbolism of the feasts), but I did grow up with a Passover Potluck (not remotely close to a seder, but Passover is a legit holiday to me.)