To clear up any confusion.
The large, call box, gate which comes with Late Night is different from any other gate because you can make that gate your front door. This means that the newspaper delivers out there and I have my mailbox outside the gate as well. Since it functions like a front door, the paparazzi are held there as long as you have a fence extending around the entire property. However, NPC's can use it just like your front door and access the house. That gate requires two squares away from the property line to place.
The normal gates can also be used to lock out Paparassi by locking it to all in your household. However, this will also lock out NPC's like repairmen, maids, etc.