It was one of the worst fire tragedies in Egypt in recent years.
The mummies, believed to have belonged to an upper-middle-class family, were found in “good conservation condition.”
Stephanie Grisham lashed "irresponsible journalism" over early reports that the first lady spent that much for the night when she was there just six hours.
Zebra snouts are typically blacker than those of donkeys, and their ears are shorter.
ISIS claimed responsibility for the attack.
The defendants have been given leave to appeal against the sentence for now.
No group immediately claimed responsibility for the attack.
Egypt is battling an Islamist insurgency concentrated in the Sinai peninsula.