Can I visit there and request to repair my note 8 screen on Sunday?

I suppose, they are Open Sundays Saturday10AM–9PM Sunday11:30AM–8PM Monday11AM–9PM Tuesday11AM–9PM Wednesday11AM–9PM Thursday11AM–9PM You just need to make sure they are not having a private event. BTW, Google Samsung837 Events you can sign up for really cool events. Hope this helps.

Yes

Yes that correct