The Lunch Buffet is cheaper than at most other places (22000 instead of 25000) but for a reason. The food is really nothing special which I think is annoying because they really use ingredients with which they could do much better. we came at half past 11 and everything was already cold which I don't mind except for the soup. Cold soup is a strange concept. I think they heat it up if you want. I saw some locals getting their's heated up but they didn't offer to heat ours up.
It all didn't look that appetizing but it get's you full.
As a matter of fact I'm not a big fan of any lunch buffet in Vientiane. I would prefer paying less and just getting one plate. Annoyingly lunch buffets are the most common veggie places