I remember having those type of things back in middle school. The first lunch was always the best because we didn't have to share it with the elementary school kids. Second lunch was always the busiest. For high school all the grades have the same lunch period. So the lines are always crowded. Unless people have free beforehand or get out class early good way to get a head start.
I remember when I had fourth lunkch and only had like two friends. but you know we found some other people and played apples to apples with them during lunch XD. then junior year i didnt really have anyone to sit with. so i went to the library most of the time to read. got me ahead of homewrok too.
After buying your lunch, scream "WHO'S READY TO PARTAY WITH DUMBLEDORE?!" to a group of complete strangers, slam your tray of food violently onto the table, spilling all the contents, and commence to leap onto the table in a frenzy of edible slip-n-slide. This plan will work, guaranteed.