You may avoid gluten by staying with rice.
Avoid wheat and flour dishes that are so common in dim-sum dishes such as BBQ pork buns, onion pan-cake, shiao-loun-pao, pot stickers, dumplings etc etc
Sorry, I don't know. But you can always call!
Not sure. You should contact the restaurant and asked them.
Get quick answers from Koi Palace staff and past visitors.