Shopping malls etc will be open, and there are some car dealers on SZR open as well, Honda is open on Fridays I'm sure others are as well.
All car places, etc are open on Saturday.
i'm not sure the exact Friday Ramadhan hours for MOE but I think it is something like 2pm - 3am, things open a bit later and stay open later during Ramadhan for shopping centers
The plus is yesterday at 10:30pm I was able to pay my phone bill at the Etisalat office 😂 yes sadly I have no life.