I can see Pcur simply doing a quick grab of her cards...assuming they are there, and not lingering.
But can you imagine ALL newly boarding pax walking through the hallways (that are supposed to be closed until cabins open later) dragging their carry on bags to find their cabins, all down the frantically busy hallway that is littered with bag of linens, trash, lots of carts, and stressed out crew members trying to get them ready on time? And then staying in the cabin to get to the safe, etc.?
I sometimes feel guilty going back to our cabin on TAD for a B2B. We are quick about it, and the crew members already recognize us (and put up with us).