I just watched the trailer, and what's baffling is that in the first scene in the Great Hall, the food appears on the table magically as it does in the books (albeit with some superfluous jumping), and all the kids have is their individual plates and utensils...but in the next Great Hall scene (which is where the screencap comes from) they've got trays, and you even see someone walking with a tray which does imply some sort of buffet setup. Very strange.