No problem, I know my parish would welcome you and any visitor. My sister-in-law is Roman Catholic, she and my brother rotate which church they will go to on Sundays. My parish priest is aware of their situation and treats her like a parishioner. This situation is not uncommon in pluralistic America. Most Orthodox Churches I've been to are as welcoming to non-Orthodox as mine from what I've noticed. Frequently, their bulletins or some notice will welcome non-Orthodox visitors, only admonishing them, as you recognize, that Holy Communion is reserved for the believing Orthodox Christians, who do not have a canonical impediment.