Why the -ki in the middle?
It's optional. You can indicate the object on verbs for emphasis when it's included as a noun as well. It should also accept it without -ki-.
Unfortunately, it does not. :(
The hints say their food is vyakula vyao but it is not accepted as answer (I reported it). When do I use the plural vyakula for food? It made sense to me to use it here as there are several people who might have ordered different dishes