Etiquette should require that the host does not ask the guests about special dietary concerns. A few assorted friends are coming over on Saturday night for dinner and dessert. I ran a sample menu idea by the guests. Turkey, though seasonal, is out since no one will want any of that by the time leftovers are finished on Friday. Pork loin? No, guest A does not eat pork. Meatloaf? No, guest A does not eat beef either though he does eat poultry and fish. Chicken curry? No, guest B does not like curry.
Apparently, no one has any issues with flour, sugar, or butter so the menu is now only dessert. The resulting sugar highs will certainly make UNO a much more intense game than usual--I hope the party does not devolve into running through the streets howling like monkeys. Again. (And next time, the menu is not for negotiation).