Absolutely delightful. I love the sass from the patrons and the executioner was hilarious.
Maybe having the red flag position locked above the item of food or having only the food where the mouse is hovering over highlighted to make it easier to place the red flag in perspective view (or switch to top view?). That was the only thing I could think of in my play through.
I was much more interested in murdering the nobles, to be honest, so I wasn't very focused on making sure their meals were proper!