Usually any discount codes provided by Samsung are usable on the Samsung Online Shop to reduce the checkout cost @shadooba
I've not seen one that can be used in a Samsung Experience Store as they are a different sector of Samsung.
Daily Driver > Samsung Galaxy s²⁵ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
