system
A chat on /r/wallstreetbets
human
Not really, that's pretty average for a decently catered wedding in a major US city.

gpt
I guess it depends if the per plate is including space, staff, etc. Used to work at a decent hotel in a major city and even our most upscale events were rarely more than 50-80 a plate for the actual food. But there is a lot of other shit to pay for that I guess you could look at as per plate.  
  
 I don't think the average city wedding with 100 guests spends 20k just on the food.