An Enclave outpost can be seen on another section of the overpass, visible to a player looking out from the highest dropoff point.
There is an easter egg in the lake under Arefu, if you look east out into the lake, when standing next to King's outpost you can see a dock extending from the south shore with a footlocker and a First Aid Kit on it. Jump down (into the water so as to not get hurt or die) and swim over to the platform. Stand on the platform (watch out for Mirelurks) and jump in the water. Swim to the bottom and out away from the platform until you reach an old car at the bottom, next to this car is a skeleton with two cinder blocks tied to its feet. There is a Silenced 10mm Pistol and ammo box lying next to him as well.
Upon first arrival at Arefu, the player is greeted by a grenade thrown by its "Sheriff," Evan King.
You can pick Evan King's lock with-out a karma penalty.
After the quest Blood Ties, King will leave his post and walk around and the residents will come out of their houses and walk around.
When you go back to Arefu and tell them to donate blood packs, Evan King will tell you to go back to Meresti and tell The Family they have a deal. However, you will not be able to tell The Family this.
Often a robot or some other wasteland creature will spawn in the center of the town.