I just simply don't go to non-Orthodox services anymore if I can help it. If I can't, there usually isn't any Communion anyway. I'm not sure if I would take Communion if it was offered to me, as it hasn't happened in a while. On one hand, it doesn't have any real significance and I'm usually hungry by that point in a service. On the other, it is a sign that one agrees with the church offering the Communion.
At this point, I think I would politely decline, since I want to wait until my first real Eucharist.