I have around 50 households, but some of them might only get a Sim day of my time in a rotation while others will get longer. It depends on my interests. I just played through Jungle Adventure with a couple and spent a couple of weeks with them since I had never played that pack before, then I checked in with Sergio and Siobhan for one day, got him promoted while she started a new club having aged out of her old one and made some progress on her job, then I spent Winterfest with the Villereal (sp?) family. Luna got pet poop from Father Winter and Jacques fought him over that. Max got his empathy up so high it no longer seemed reasonable for him to be evil, so he got a trait changing potion and became self assured instead. I will probably spend a couple of days with them before moving on. Generally I play one neighborhood at a time and touch base with all the Sims there, then move to the next.