We make them eat dinner last. ;)
Seriously, we suggest that you start when the parking lot is "quiet". Sometimes that is 5-15 minutes after official start time (although we will start whenever your request.) After that:
At The Two-Sixty, we will allow them to be seated through the main door until the end of the processional. After that, we direct them to the rear door (behind curtain) and they can enter from the rear of the room.
At The Industria, people enter the rear of the room.
We set out less chairs than your total count, so we can set out extra chairs in the back of the room when a late guest arrives.