Plus masses of food waste from greedy gits overloading plates & not eating half of it.
I was always astounded when pubs attached to some Premier Inns had the evening buffets on Mon-Fri,watching the locals with their kids pile food high on plates,food they could not possibly eat.
It was like a frigging zoo.
I gave those places a swerve very quickly.
Thankfully the chain concerned stopped the buffets a couple of years ago.