If they are not just symbolic, then how you deal with that I am part of the body of Christ?
The Living Tradition of the Eucharist.
It is interesting to emphasize another form of the Synodical system, which accentuates the importance of Tradition: the Eucharist itself. In the Eucharist, all Orthodox Christians meet together and in absolute agreement, in doctrine and practice witness the presence of the Holy Trinity on the altar of the Church. The bishop and the priest pray to God the Father to send the Holy Spirit and transform the bread and wine into the very body and blood of Christ. All the faithful present are called to receive Communion and become active members of the Body of Christ. In the liturgy, as it was instituted by the Lord Himself, the whole Church meets every day to proclaim and live the oneness and the unity of faith in Jesus Christ. In the Orthodox liturgy, we see all the history of Tradition embodied in the body and blood of Christ.
http://www.goarch.org/en/ourfaith/articles/article7116.asp