I had the flu last year, it sucked big time.
I had a 12 hour stomach virus a few days ago, it was short but intense, almost as bad as the flu. I looked like a zombie, broke the bloodvessels on top of my eyes and all underneath was yellow / gold like black eyes, all from power puking.

Im currently in a hotel room in atlantic city, took a couple days break for 10 year anniversary.

As for the clients, id thank the soup lady somehow, either a card or discount or whatever you feel isnt tacky.
The other clients, and the lady who complained about delivery time: I sometimes am not politically correct but thats a benefit of being the boss. Besides choosing which 80 hours a week I work, I can choose to fire clients. I would call them out on the spot and make them feel like a complete moron. Homey dont play.