Very friendly restaurant. A woman (the owner?) waited on us and was extremely knowledgeable about the vegan options on the menu. For the record, nearly all the 'vegetable' dishes on the Chinese side of the menu are vegan. And, there are several vegan Vietnamese options as well.
After a long drive to Rapid City, it was nice to have a worry-free meal once we arrived.
FYI--We went on a Tuesday night and the restaurant was quite full.
Cons: Small parking lot