Great food! Good spot for large groups... I've gone plenty of times to Wan Fu either on dates (yes, I do go on those) or with large family groups. The last time was with family friends and we were able to occupy a semi-private room. I am told that they have a party room upstairs for larger parties of 100, the room doesn't have any windows so I don't really know what the ambiance would be like... the food would definitely be the star attraction (as usual).
The best way to go is a large group of 6 and then order away... the lazy susan will help you int he middle of the table to fix your plates family style :)
Favorite veg is the Chinese broccoli, hands down... but there are many other tasty dishes on a large menu. The food comes quickly... you eat what you desire... and you take home left overs!