Portions here are definitely huge, but the service is definitely lacking.
They have all the typical Vietnamese dishes, which are all very good. My family, who is of Vietnamese origin, loves coming here first for the portions and second because of the quality. I find there is nothing that really pops for the taste though and can be a bit bland at times.
The service here can definitely be improved. My family and I have been ignored several times when wanted to ask for more tea, but I guess the quantity of food makes it up.
Definitely when we're in the area - this is our go-to Viet restaurant. However, if you're coming for quality and service, I would recommended elsewhere.