Grrrr. I can’t be the only person that has asked visitors what their kids eat, to be met with an airy ‘Oh, they eat anything!’ and then it turns out said children only eat one brand of fish finger or just cheese on toast, but hold the cheese.
My dc are fussy so I’ll tell you they’ll eat fish fingers, pizza and nuggets before we come so you don’t spend loads of time and money on food they won’t eat and get really pissed off with us. You might judge me with my fussy kids who won’t eat a coq au vin, but we all know that is infinitely preferable and much more fun than watching the giant paddy and incessant whining brought on by the inclusion of a single slice of lettuce on a ham sandwich. 
So say! Say your dc are fussy buggers before you come and we can all be happy 