Villains After Hours or Disney After Dark

On our upcoming August trip, there is one date left for Disney Villains after Dark at the Magic Kingdom. There is also a date for Disney after Hours at the Animal Kingdom. I probably cannot afford to do both on this extended trip. You have pros and cons on both sides — hard-to-find villains on one hand, and unfettered access to Flight of Passage on the other. (I have two FPS for this already.) I have two teenage girls coming with me, as well as my 9-year-old son. Which would you recommend and why?

Of the two, I think I would choose the Villains After Dark. It is not very often you can even SEE the villains around the parks. I believe that there are no Meet & Greets, but plenty of villains shows around.