Just the term "sneeze guards" makes me want to retch.
Think about the business model required to make such a buffet work.
Food as cheap as you can make it. Keep it out there as long as possible. Get people to fill up on bread, rice, and pasta so they don't eat as much of the expensive stuff, which is usually at a carving station where employees dole out just thin slices and make you come back if you want more.
