I think the only place where we've eaten on every trip, so far, is Jiko. We like to switch it up and are always more interested in trying new places when we can, but Jiko being the best dining option in the Animal Kingdom area makes it a no-brainer when it comes to planning a dinner for an Animal Kingdom night.
That being said, on our last trip, we didn't even go to the Animal Kingdom and still made the effort to find our way out to Jiko.