A few weeks ago a similar place opened here in Berlin: A former hipster shoe store was converted to an "Oreo popup" for a weekend.
https://mitvergnuegen.com/2017/oreo-eroeffnet-seien-ersten-p...
It was mostly empty besides some installations, art, drawings on the walls and a oreo packaging filled tunnel that lead to ball pool with white balls. Of course you could also get free Oreo cookies and take lots of photos with the different "installations" placed around the room like a giant Oreo cookie or glas vases filled with Oreos.
It was packed all day. As some people started absuing the free Oreos (go in, get cookies, come out, dump in bag, go in ...) they had to add security at the door.