my wife used to have to take board members and those type out to eat after conferences and conventions. she had one (big wig) guy who liked his steak burnt. not well done, but over cooked, but burnt.
so she would always have to go to kitchen to talk to the chef/cook and let him know ahead of time. look, this guy is gonna order it burnt, if you don't, he'll send it back and i don't wanna waste your time with that. but most of the time it had to be sent back.