Not sure about those places, but when I was in southeast China all meals were "family style" too. There were a LOT of veggies, chicken, tofu, fish... rice wasn't as big as I had thought it would be.
Have fun! Sounds like a great trip.
Eating lots but still hungry? Eat more fat. Mid-day sluggishness? Eat more fat. Feeling depressed or irritable? Eat more fat. People think you've developed an eating disorder? Eat more fat... in front of them.