I ate here on a Sunday evening with a large group of friends who told me in advance that the place was edible. I thought it was better than edible, but I may not have the world's highest standards.
Like you'd expect from a buffet (perhaps especially one called "World Buffet"), there's tons of variety in the food options. Most people seemed to like the frozen yogurt. Lots of watermelon always makes me happy. I wouldn't go in with too high of expectations, but if you're looking for something to feed a crowd, this place is definitely functional. Parking was no problem and there was plenty of seating. Bonus points if you speak Vietnamese.