I grew up not being very religious in my immediate family but being required to do communion, confirmation and the required religious ed classes until like 10th grade mostly to appease grandparents that were more religious. Never went to church for anything other than the above requirements, or for weddings, funerals etc.
We Celebrate Xmas and Easter but not as a religious holiday, the only thing we really do is not eat meat on Fridays during Lent for what ever reason, probably because of how little it really effects your life.