I had an evening flight home one summer. I showered in the fitness center, and then spent the rest of the afternoon in the lobby. I didn't want to go outside and get all sweaty before my flight. The gift shop in the lobby had bottled soda and pretzels, that was about it. I was hoping that the new coffee shop would have food available for people who wanted to stay inside.
I suppose if I were in the same situation now, I could have Grub Hub or Door Dash deliver food to me in the lobby. That wasn't something I had done back then.