The 4 adolescent boys, sound fun as you say and they are great.
Just cook, what you think you want to cook.
They will probably eat anything or at least try it.
Here in Hawaii, there are many Chinese & other Asian people, and they eat anything. Not only "Asian" food.
And if you try to cook Asian, fine.
They will probably think you are just being a nice Host.
Chinese food... REALLY varies as well, per region. It is not all the same. And it is not like, the Americanized Chinese, food here in the States.
Or just see, what the boys might like.
Per fish, here in Hawaii, where there are MANY Asian cultures... fish is cooked, in a Shoyu/ginger/sesame oil type marinade. This is common.
And it is either baked in the sauce, or on the stove top, cooked in the sauce.
It is nice, when a Host attempts to cook a guest's home/cultural type, foods.
ie: when I was in Europe with my Husband... my MIL made for ME.... a dish that she "thought" was typical Hawaiian food.
It was not authentic... but you know what? I REALLY appreciated even her attempts to make it. AND, I was really MISSING, my own home type foods. So it was a WELCOMED, food to see and eat.
If you, are willing to serve a Rice dish... just get some take-out Chinese Fried Rice. I am sure they will love that. They are ONLY there for 2 weeks. A typical cooking style, does not have to be adhered to, absolutely.
Brown Rice... is not typically served in Asian cuisine.
The boys will be there for 2 weeks... and it can easily be a time where there are other types of foods served, as well as, some common Asian foods. Or maybe, the boys themselves might want to cook something????