I would have surely thought that there is some kind of application process you have to go through to get on Come Dine With Me.
I would also have thought that there would be a section of which food do you not like to eat, so when they get a contestant that has to use a ream of A4 paper and still not have enough, how on earth did Karen get chosen to participate, as she hardly eats (or likes) anything, so Is it worth her going on there if she does not like much or is very fussy about her food.