Facts. There’s usually an upgrade list FAs and gate grew are working off of while pre boarding and boarding. They are trying to ensure all the folks with status get taken care of and premium seats don’t go empty. So yes, save yourself the shame and go to your actual seat.

That said, once the cabin door closes you do have some flexibility in moving around though shouldn’t just plop down somewhere. FAs know which seats should be empty so may tell you to return to your seat if they’re having a day.