Is it possible to be married at Saint Andrew's Episcopal Church if you are not a member?

Yes

Congratulations on your marriage plans! We would love to explore the possibility of you having your wedding celebrated at Saint Andrew’s. In that regard, it is important to note that, given our parish's understanding of the place of marriage within the life of the church, it is our expectation that at least one member of the couple getting married at Saint Andrew’s be a member of the parish. Let me know if you are interested, and I can provide you with further information.