How many people attended your oath ceremony?

Montgomery AL field office. Small looking building, my "Oath Ceremony Scheduled" letter doesn't mention guests at all. But I've read about guests online. My parents and one of my close friends talked about going with me, though we're not sure yet (we live 1.5 hours away).

I'm gonna see if I can call the building tomorrow when they're open, but in the meantime: how many people did you bring?