From TripAdvisor: The museum opening hours have changed. It's now open from 09:00 - 14:00, last admission 13:30, and again from 17:00 - 21:00, last admission at 20:30.
The museum still costs LE100 to enter, but the LE50, non-flash, photo
tickets are definitely available. Keep it handy as
you can guarantee at least one museum employee will want to see it, if
you're seen snapping away There's an LE100 immediate fine if you're
caught taking photos with no ticket and I dare say your memory card will