Thourne
Hero
That is different in a nice way. Closest I've ever seen to private areas is the mass was spread across 3 rooms of many tables per room.I tend to play with people I know most of the time, but there are games that I know they don't enjoy.
When I go to conventions I run mainly Call of Cthulhu with significant descriptions on death and mutilations, or even odd games like Monsterhearts which features sexual and queer content. But the con I go most frequently to is in a University and each group gets their own tutorial room so you don't have people wandering by.
*speaking of conventions specifically.