Go to the Great Hall.

The Great Hall is half full when you enter it. Most of the people there are the Beauxbatons and Durmstrang students, as well as other hanger-ons. The Gryffindor table is already mostly empty, with only a few first and second years finishing their meals. None of your friends are there, so you sit by yourself at the far end of the table, avoiding the other people, who would only want to talk to you. You help yourself to toast and butter, and pour yourself a glass of pumpkin juice.

You just finished your third piece of toast, when two bangs alert you to the arrival of two people opposite you. Looking up warily, you are relieved to see that it is Fred and George Weasley, and not some would-be fan.