Question for anyone who plays a home in Brindleton Bay

Guess I've been lucky in that department. Got one household on the lot behind the Brindleton Pawspital, and my sim has already had a visit from a friend from her old apartment. The family in Dachshound's Creek has had two visits from relatives beyond the welcome wagon, and at first I'd set things to encourage strays. Then the strays took over the house so I changed the lot traits since they'd already adopted a dog.