Here's a quote from a "day in the life" sheet I was sent after a phone interview with Susquehanna. I didn't continue with the job interview for this very reason:
"SIG partners with external caterers to provide a buffet lunch of main courses, salads, soup, and dessert, and it changes on daily basis. So you grab a plate and head back to your desk to eat; it will give you some time to catch up on the latest tech and market news on the net as you eat."