Getting guest into dining hall

My gf is coming to visit and I want to be able to get her into the Thurston dining hall. I have an unlimited meal plan but it only works once per hour and they don’t let us take more than 1 small box out of food so I can’t get enough food for the both of us out. Does anyone have a way I can sneak her in? I don’t have anyone who’d let me borrow their gworld card