Non-members are allowed to come to some of our events as well.
They aren't allowed at the business sessions or ritual but the rest is open. We have representatives of other NPC's at our NPC luncheon, various speakers and significant others at some of the dinners. We have a gentleman who brings his wife to our confirmed conventioneers banquet (she's in a wheelchair) every time. And that's been a LOT of conventions.
In Chicago last summer, Laurel Clark's husband and son came to the Foundation luncheon (we were starting an endowment in her name) and he gave us her badge. (for those who aren't aware, she died in the Columbia...)