If you go to the tab on Tip n' Tag called "Places" you will see the "Eat" section click on "Breakfast" and see a bunch of breakfast places in Amman - and also almost all breakfast places open before 10 a.m. like @Pancake & Waffle House opens at 7:30 a.m. or even @Crumz opens at 9:00 a.m. or @Blue Fig opens at 8:30 a.m.
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