Am I required to go to lunch on a call-back interview?

Some offices may invite you to lunch following your interview. You are not required to go to lunch on a call-back interview, but we think it offers an excellent opportunity for a free lunch and for you to meet with MoFo associates in a less formal setting. If a post-interview lunch is being offered, you will see it at the time you sign up for your call-back interview. Some offices also offer a breakfast option