Am I really allowed to eat in the H&R Block corporate cafeteria?

Reuben sandwich and fries for $5.49, plus tax |
Two of my co-workers came back to the office the other day bragging about their really good, surprisingly cheap lunch in the Power & Light District. Peter had gotten a cheeseburger, fries and a drink for about five bucks.
I was, of course, curious. Where had they gotten this good deal?
“The company cafeteria in the H&R Block building,” Peter said.