Don’t forget that children who read (especially in Arabic!) are smarter, prettier, happier, and all-around nicer than those who don’t. Or, well, at least smarter.
Other venues that have children’s book events are: Bookspot on Road 9 in Ma’adi, Diwan bookstores around Cairo (and now in Alex), and their events calendar is here. The Alef calendar seems to focus solely on grown-up events, but why not take your (older) child to see Ibrahim Abdel Meguid or Khairi Shalaby?